7.1
HIGH
CVSS 3.1
CVE-2026-16118
Xdgmime: heap-based buffer overflow in _xdg_mime_magic_parse_magic_line() in xdgmimemagic.c
Overview
Description
A flaw was found in xdgmime. A heap-based buffer overflow can be triggered in _xdg_mime_magic_parse_magic_line() in the xdgmimemagic.c file on little-endian systems when an attacker-controlled MIME magic file in a user-writable XDG data location (e.g., in the $XDG_DATA_HOME/mime/magic path) is parsed by an application performing MIME type detection (e.g., via g_content_type_guess()). When performing byte-swap, incorrect pointer arithmetic on the write side causes an out-of-bounds write of 2 bytes, resulting in an application crash or memory corruption.
Details
INFO
Published Date :
July 17, 2026, 8:17 p.m.
Last Modified :
Oct. 6, 2026, 3:17 a.m.
Remotely Exploit :
No
Source :
[email protected]
Impact
Affected Products
The following products are affected by CVE-2026-16118
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 53f830b8-0a3f-465b-8143-3b8a9948e749 | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
Address heap-based buffer overflow by updating the affected software and validating MIME magic files.
- Update xdgmime to the latest version.
- Validate MIME magic file contents.
- Restrict user access to data directories.
- Apply memory corruption patches.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-16118.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-16118 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-16118
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-16118 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-16118 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Oct. 06, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:76042 -
CVE Modified by [email protected]
Oct. 05, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> -
CVE Modified by [email protected]
Oct. 05, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:75652 Added Reference https://access.redhat.com/errata/RHSA-2026:75654 Added Reference https://access.redhat.com/errata/RHSA-2026:75655 Added Reference https://access.redhat.com/errata/RHSA-2026:75657 Added Reference https://access.redhat.com/errata/RHSA-2026:75658 Added Reference https://access.redhat.com/errata/RHSA-2026:75659 Added Reference https://access.redhat.com/errata/RHSA-2026:75660 -
CVE Modified by [email protected]
Oct. 02, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:74674 Added Reference https://access.redhat.com/errata/RHSA-2026:74677 Added Reference https://access.redhat.com/errata/RHSA-2026:74678 Added Reference https://access.redhat.com/errata/RHSA-2026:74679 Added Reference https://access.redhat.com/errata/RHSA-2026:74681 Added Reference https://access.redhat.com/errata/RHSA-2026:74683 Added Reference https://access.redhat.com/errata/RHSA-2026:74685 Added Reference https://access.redhat.com/errata/RHSA-2026:74687 Added Reference https://access.redhat.com/errata/RHSA-2026:74688 Added Reference https://access.redhat.com/errata/RHSA-2026:74771 -
CVE Modified by [email protected]
Oct. 01, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:74458 Added Reference https://access.redhat.com/errata/RHSA-2026:74459 Added Reference https://access.redhat.com/errata/RHSA-2026:74460 Added Reference https://access.redhat.com/errata/RHSA-2026:74461 Added Reference https://access.redhat.com/errata/RHSA-2026:74462 Added Reference https://access.redhat.com/errata/RHSA-2026:74463 -
CVE Modified by [email protected]
Oct. 01, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:74450 -
CVE Modified by [email protected]
Oct. 01, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:74359 Added Reference https://access.redhat.com/errata/RHSA-2026:74360 Added Reference https://access.redhat.com/errata/RHSA-2026:74361 Added Reference https://access.redhat.com/errata/RHSA-2026:74362 Added Reference https://access.redhat.com/errata/RHSA-2026:74363 Added Reference https://access.redhat.com/errata/RHSA-2026:74364 Added Reference https://access.redhat.com/errata/RHSA-2026:74365 -
CVE Modified by [email protected]
Sep. 30, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:73909 Added Reference https://access.redhat.com/errata/RHSA-2026:73929 Added Reference https://access.redhat.com/errata/RHSA-2026:73930 Added Reference https://access.redhat.com/errata/RHSA-2026:73959 Added Reference https://access.redhat.com/errata/RHSA-2026:73960 Added Reference https://access.redhat.com/errata/RHSA-2026:73961 Added Reference https://access.redhat.com/errata/RHSA-2026:73962 -
CVE Modified by [email protected]
Sep. 30, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:73859 -
CVE Modified by [email protected]
Sep. 29, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:72502 -
CVE Modified by [email protected]
Sep. 28, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:72470 Added Reference https://access.redhat.com/errata/RHSA-2026:72475 Added Reference https://access.redhat.com/errata/RHSA-2026:72476 -
CVE Modified by [email protected]
Sep. 28, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:72399 -
CVE Modified by [email protected]
Sep. 28, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:72394 Added Reference https://access.redhat.com/errata/RHSA-2026:72395 -
CVE Modified by [email protected]
Sep. 24, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:71403 -
CVE Modified by [email protected]
Sep. 24, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:71405 -
CVE Modified by [email protected]
Sep. 24, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:71404 -
CVE Modified by [email protected]
Sep. 23, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:70636 -
CVE Modified by [email protected]
Sep. 21, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:67956 -
CVE Modified by [email protected]
Sep. 11, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:66451 -
CVE Modified by [email protected]
Sep. 08, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:64800 -
CVE Modified by [email protected]
Sep. 08, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/errata/RHSA-2026:64799 -
CVE Modified by [email protected]
Sep. 03, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16118.json">CVE-2026-16118</a> Added Reference https://access.redhat.com/security/cve/CVE-2026-16118 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2501732 Added Reference https://gitlab.freedesktop.org/xdg/xdgmime/-/work_items/41 Removed Reference https://access.redhat.com/security/cve/CVE-2026-16118 Removed Reference https://bugzilla.redhat.com/show_bug.cgi?id=2501732 Removed Reference https://gitlab.freedesktop.org/xdg/xdgmime/-/work_items/41 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Sep. 03, 2026
Action Type Old Value New Value Added Reference https://gitlab.freedesktop.org/xdg/xdgmime/-/work_items/41 Removed Reference https://gitlab.freedesktop.org/xdg/xdgmime/-/work_items/41 -
CVE Modified by [email protected]
Jul. 29, 2026
Action Type Old Value New Value Changed Affected [{'vendor': 'xdg', 'product': 'xdgmime', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '*', 'versionType': 'semver'}], 'packageName': 'xdgmime', 'collectionURL': 'https://gitlab.freedesktop.org/xdg/xdgmime', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 10', 'packageName': 'glib2', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 7', 'packageName': 'webkitgtk4', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'packageName': 'webkit2gtk3', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:9'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 9', 'packageName': 'glib2', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:9'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 9', 'packageName': 'webkit2gtk3', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}] [{'vendor': 'xdg', 'product': 'xdgmime', 'packageName': 'xdgmime', 'collectionURL': 'https://gitlab.freedesktop.org/xdg/xdgmime', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 10', 'packageName': 'glib2', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 7', 'packageName': 'webkitgtk4', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'packageName': 'webkit2gtk3', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:9'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 9', 'packageName': 'glib2', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:9'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 9', 'packageName': 'webkit2gtk3', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 22, 2026
Action Type Old Value New Value Added Reference https://gitlab.freedesktop.org/xdg/xdgmime/-/work_items/41 Added SSVC {'id': 'CVE-2026-16118', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-22T18:18:50.584747Z'} -
CVE Modified by [email protected]
Jul. 21, 2026
Action Type Old Value New Value Changed Affected [{'cpes': ['cpe:/o:redhat:enterprise_linux:10'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 10', 'packageName': 'glib2', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 7', 'packageName': 'webkitgtk4', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'packageName': 'webkit2gtk3', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:9'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 9', 'packageName': 'glib2', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:9'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 9', 'packageName': 'webkit2gtk3', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}] [{'vendor': 'xdg', 'product': 'xdgmime', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '*', 'versionType': 'semver'}], 'packageName': 'xdgmime', 'collectionURL': 'https://gitlab.freedesktop.org/xdg/xdgmime', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 10', 'packageName': 'glib2', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 7', 'packageName': 'webkitgtk4', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'packageName': 'webkit2gtk3', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:9'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 9', 'packageName': 'glib2', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:9'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 9', 'packageName': 'webkit2gtk3', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}] -
New CVE Received by [email protected]
Jul. 17, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/o:redhat:enterprise_linux:10'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 10', 'packageName': 'glib2', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 7', 'packageName': 'webkitgtk4', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'packageName': 'webkit2gtk3', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:9'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 9', 'packageName': 'glib2', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:9'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 9', 'packageName': 'webkit2gtk3', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}] Added Description A flaw was found in xdgmime. A heap-based buffer overflow can be triggered in _xdg_mime_magic_parse_magic_line() in the xdgmimemagic.c file on little-endian systems when an attacker-controlled MIME magic file in a user-writable XDG data location (e.g., in the $XDG_DATA_HOME/mime/magic path) is parsed by an application performing MIME type detection (e.g., via g_content_type_guess()). When performing byte-swap, incorrect pointer arithmetic on the write side causes an out-of-bounds write of 2 bytes, resulting in an application crash or memory corruption. Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H Added CWE CWE-122 Added Reference https://access.redhat.com/security/cve/CVE-2026-16118 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2501732 Added Reference https://gitlab.freedesktop.org/xdg/xdgmime/-/work_items/41
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.