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TI-2026-46937 Aliases CVE-2026-65897GHSA-xcm3-8jr8-4m46

Grav API Plugin 1.0.9 Privilege Escalation via Invitations groups

Priority HIGH 73CWE-269Published · Updated

Key facts

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

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

Summary

Grav API Plugin versions before 1.0.10 fail to validate the groups field in InvitationsController::create(), allowing authenticated api.users.write callers to assign invited accounts to groups that grant api.super permissions. Attackers can create invitation records with elevated group membership, and when accepted, the new account gains full super-admin API access without the inviter holding those permissions.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00458 39th percentileScored 2026-11-07
Fix Fixed grav (getgrav): 1.0.10

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 1.0.101.0.10Patch availableCNA
  • grav Vendorgetgrav Affected before 1.0.10 Fixed in 1.0.10 Patch available CNA

Remediation

  • Fix · CNA grav (getgrav) Fixed in 1.0.10

Fixed in the same release

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

  • Release ·

    getgrav grav 1.0.10

    3 records Highest priority Priority HIGH 2 HIGH, 1 MEDIUM

    Other records, highest priority first

    • TI-2026-46935 Grav API Plugin before 1.0.10 Broken Access ControlPriority HIGH 69
    • TI-2026-46936 Grav API Plugin before 1.0.10 Path Traversal via movePriority MEDIUM 64
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-65897
  2. 2026-10-03 Alias added: GHSA-xcm3-8jr8-4m46

References

Patch 2

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