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TI-2026-53083 Aliases CVE-2026-75837GHSA-xhfv-7758-r9hx

Grav before 2.0.14 Privilege Escalation via Group Access Field

Priority HIGH 75CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Privilege escalation, Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-269 and CWE-862.

Summary

Grav before 2.0.14 fails to guard the access field in the core group blueprint with the required security@: admin.super restriction. A delegated admin.users operator can save a group with access[admin][super]=true to escalate to super-admin, gaining scheduler and Twig evaluation capabilities.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00494 42nd percentileScored 2026-11-07
Fix Fixed grav (getgrav): 2.0.14getgrav/grav (Packagist): 2.0.14

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

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 2.0.142.0.14Patch availableCNA
—getgrav/grav (Packagist)before 2.0.142.0.14Patch availableGHSA-xhfv-7758-r9hx
  • grav Vendorgetgrav Affected before 2.0.14 Fixed in 2.0.14 Patch available CNA
  • getgrav/grav (Packagist) Vendor— Affected before 2.0.14 Fixed in 2.0.14 Patch available GHSA-xhfv-7758-r9hx

Remediation

  • Fix · CNA grav (getgrav) Fixed in 2.0.14
  • Fix · GHSA-xhfv-7758-r9hx getgrav/grav (Packagist) Fixed in 2.0.14 Advisory →

Fixed in the same release

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

  • Release ·

    getgrav grav 2.0.14

    2 records Highest priority Priority HIGH 1 HIGH, 1 LOW

    Other records, highest priority first

    • TI-2026-53080 Grav before 2.0.14 Stored XSS via Invalid UTF-8 BytePriority LOW 23
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-75837
  2. 2026-10-03 Alias added: GHSA-xhfv-7758-r9hx

References

Advisory 2

Other 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