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TI-2026-71140 Aliases CVE-2026-109324GHSA-fr83-pf82-gwp5

Memory exhaustion in Grav via oversized image transforms

Priority LOW 31CWE-409Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Grav before 2.1.7 contains a denial of service flaw in its image handling. A missing check on image dimensions (CWE-409) lets an authenticated media author upload compressed oversized raster images that GD or Imagick fully decode. An anonymous attacker can reference a Twig or Markdown transform to repeatedly exhaust memory and make pages unavailable.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Grav before 2.1.7 contains a denial of service vulnerability that allows authenticated media authors to exhaust memory by uploading compressed oversized raster images. Attackers can reference a Twig or Markdown transform so GD or Imagick decodes the full source without dimension checks, letting anonymous requests repeatedly cause page unavailability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0032 25th percentileScored 2026-11-07
Fix Fixed grav (getgrav): 2.1.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
getgravgravbefore 2.1.72.1.7Patch availableCNA
  • grav Vendorgetgrav Affected before 2.1.7 Fixed in 2.1.7 Patch available CNA

Remediation

Update Grav to version 2.1.7 or later, which fixes the issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA grav (getgrav) Fixed in 2.1.7

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    getgrav grav 2.1.7

    4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-71142 Information disclosure in Grav exposes nested .git directoriesPriority MEDIUM 44
    • TI-2026-71141 Authentication bypass in Grav Clockwork profiler exposes sensitive dataPriority MEDIUM 44
    • TI-2026-71131 Information disclosure in Grav Clockwork debugger token via Twig sandboxPriority LOW 31
    Show all 4 records →

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-109324
  2. 2026-10-12 Alias added: GHSA-fr83-pf82-gwp5
  3. 2026-10-13 Priority changed: MEDIUM → LOW
  4. 2026-10-13 CISA SSVC decision points changed

References

Advisory 1

  • TI-2026-30893 Grav: Privilege Escalation via Missing Server-Side Validation of groups/access CVSS 3.1CRITICAL 9.4
  • TI-2025-28971 Cross Site Scripting vulnerability in grav v.1.7.48 and before allows an attacker to… CVSS 3.1CRITICAL 9.8
  • TI-2021-04523 Unauthenticated Arbitrary YAML Write/Update leads to Code Execution CVSS 3.1CRITICAL 9.8
  • TI-2026-50940 Grav CMS before 2.0.16 Origin Validation Bypass via Referer CVSS 4.0CRITICAL 9.3
  • TI-2026-46446 Grav before 2.0.7 Remote Code Execution via Blueprint dynamicData CVSS 4.0CRITICAL 9.3
  • TI-2021-22428 GravCMS 1.10.7 - Arbitrary YAML Write/Update (Unauthenticated) (2) CVSS 4.0CRITICAL 9.3
See all 228 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences