CVE-2026-75003
Roundcube Webmail SVG FuncIRI Attribute Information Disclosure Vulnerability
Description
In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, an unclosed url() in a FuncIRI attribute of an SVG image could evade the remote image blocking, which may lead to information disclosure or privilege escalation.
INFO
Published Date :
Aug. 17, 2026, 1:16 p.m.
Last Modified :
Aug. 17, 2026, 3:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 8254265b-2729-46b6-b9e3-3dfca2d5bfca | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update Roundcube Webmail to version 1.6.18 or later.
- Update Roundcube Webmail to version 1.7.3 or later.
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-2026-75003.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-75003 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-2026-75003
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-2026-75003 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-75003 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 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-75003', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-17T14:59:09.085084Z'} -
New CVE Received by [email protected]
Aug. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Roundcube', 'product': 'Webmail', 'versions': [{'status': 'affected', 'version': '1.6.0', 'lessThan': '1.6.18', 'versionType': 'semver'}, {'status': 'affected', 'version': '1.7.0', 'lessThan': '1.7.3', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] Added Description In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, an unclosed url() in a FuncIRI attribute of an SVG image could evade the remote image blocking, which may lead to information disclosure or privilege escalation. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N Added CWE CWE-669 Added Reference https://github.com/roundcube/roundcubemail/commit/1cebea03474305d9f75a9a33d30880d290b5591b Added Reference https://github.com/roundcube/roundcubemail/commit/440277c32e6d84f3d116153af1cc8454361a8a56 Added Reference https://github.com/roundcube/roundcubemail/releases/tag/1.6.18 Added Reference https://github.com/roundcube/roundcubemail/releases/tag/1.7.3 Added Reference https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3