CVE-2026-61690 PUBLISHED

Grav: Decompression Bomb via ZipArchiver - Missing Extraction Limits

Assigner: GitHub_M
Reserved: 10.07.2026 Published: 19.08.2026 Updated: 19.08.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 6.5

Product Status

Vendor getgrav
Product grav
Versions
  • Version < 2.0.1 is affected

References

Problem Types

  • CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) CWE