CVE-2026-61690CWE-409

CVE-2026-61690

Medium · published August 19, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
44.0
In the wild
Unconfirmed
What it is

Grav is a file-based Web platform. Prior to 2.0.1, Grav ZipArchiver::extract() in system/src/Grav/Common/Filesystem/ZipArchiver.php passes archives to ZipArchive::extractTo() without enforcing the system.gpm.archive uncompressed-size, file-count, or nesting-depth limits. Code using Archiver::create('zip') to extract an attacker-controlled archive can exhaust disk space or inodes and make the site unavailable. This issue is fixed in version 2.0.1.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00530 · 44.0th percentile
Weakness
CWE-409 · Improper Handling of Highly Compressed Data (Data Amplification)
Published
2026-08-19T20:18Z
References (4)
https://github.com/getgrav/grav/commit/1c1003cfcab5344203d6fde1aaa1f9a4ee3413ff · [email protected]https://github.com/getgrav/grav/releases/tag/2.0.1 · [email protected]https://github.com/getgrav/grav/security/advisories/GHSA-928x-9mpw-8h56 · [email protected]https://github.com/getgrav/grav/security/advisories/GHSA-928x-9mpw-8h56 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 19 AUG 15:20Z
    Grav: Decompression Bomb via ZipArchiver - Missing Extraction Limits
    cvelistv5