CVE-2026-59193
Grav CMS — Improper Handling of Highly Compressed Data in Installer::unZip()
Description
Grav is a file-based Web platform. Prior to 2.0.0, an authenticated admin.super user can crash Grav or fill the disk by uploading a specially crafted ZIP archive through the Direct Install tool because Installer::unZip calls ZipArchive::extractTo without limits on uncompressed size, entry count, or directory depth. This issue is fixed in version 2.0.0.
INFO
Published Date :
July 10, 2026, 5:17 p.m.
Last Modified :
July 10, 2026, 8:16 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 | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update Grav to version 2.0.0 or later.
- Avoid uploading unverified ZIP archives.
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-2026-59193.
| URL | Resource |
|---|---|
| https://github.com/getgrav/grav/commit/23d6f2adf4ce11889c088ac8557c8314baeef781 | Patch |
| https://github.com/getgrav/grav/releases/tag/2.0.0 | Product |
| https://github.com/getgrav/grav/security/advisories/GHSA-2vcx-h8p2-9pg9 | Exploit Vendor Advisory |
| https://github.com/getgrav/grav/security/advisories/GHSA-2vcx-h8p2-9pg9 | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-59193 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-2026-59193
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-2026-59193 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-59193 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
Jul. 10, 2026
Action Type Old Value New Value Added Reference https://github.com/getgrav/grav/security/advisories/GHSA-2vcx-h8p2-9pg9 Added SSVC {'id': 'CVE-2026-59193', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-10T19:04:43.281679Z'} -
Initial Analysis by [email protected]
Jul. 10, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:getgrav:grav:2.0.0:beta1:*:*:*:*:*:* *cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:* versions from (including) 1.0.0 up to (excluding) 2.0.0 Added Reference Type GitHub, Inc.: https://github.com/getgrav/grav/commit/23d6f2adf4ce11889c088ac8557c8314baeef781 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/getgrav/grav/releases/tag/2.0.0 Types: Product Added Reference Type GitHub, Inc.: https://github.com/getgrav/grav/security/advisories/GHSA-2vcx-h8p2-9pg9 Types: Exploit, Vendor Advisory -
New CVE Received by [email protected]
Jul. 10, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'getgrav', 'product': 'grav', 'versions': [{'status': 'affected', 'version': '>= 1.0.0, < 2.0.0'}]}] Added Description Grav is a file-based Web platform. Prior to 2.0.0, an authenticated admin.super user can crash Grav or fill the disk by uploading a specially crafted ZIP archive through the Direct Install tool because Installer::unZip calls ZipArchive::extractTo without limits on uncompressed size, entry count, or directory depth. This issue is fixed in version 2.0.0. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-409 Added Reference https://github.com/getgrav/grav/commit/23d6f2adf4ce11889c088ac8557c8314baeef781 Added Reference https://github.com/getgrav/grav/releases/tag/2.0.0 Added Reference https://github.com/getgrav/grav/security/advisories/GHSA-2vcx-h8p2-9pg9