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TI-2026-58982 Aliases CVE-2026-86193GHSA-6rq7-cjmj-rc58

Grav API Plugin Authentication Bypass via Group-Inherited Super

Priority HIGH 73CWE-863Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

grav-plugin-api before 1.0.20 fails to validate group-inherited super permissions in user-management guards, allowing non-super user managers to modify super-admin accounts. Attackers with api.access and api.users.write can patch password fields on group-super accounts to gain full administrative control.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00364 30th percentileScored 2026-11-07
Fix Fixed grav-plugin-api (getgrav): 1.0.20

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
getgravgrav-plugin-apibefore 1.0.201.0.20Patch availableCNA
  • grav-plugin-api Vendorgetgrav Affected before 1.0.20 Fixed in 1.0.20 Patch available CNA

Remediation

  • Fix · CNA grav-plugin-api (getgrav) Fixed in 1.0.20

Fixed in the same release

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

  • Release ·

    getgrav grav-plugin-api 1.0.20

    3 records Highest priority Priority HIGH 3 HIGH

    Other records, highest priority first

    • TI-2026-58985 Grav API Plugin before 1.0.20 Authentication Bypass via Host HeaderPriority HIGH 73
    • TI-2026-58984 grav-plugin-api 1.0.0 through 1.0.19 Privilege Escalation via Dot-Keyed Super FlagPriority HIGH 73
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-86193
  2. 2026-10-03 Alias added: GHSA-6rq7-cjmj-rc58

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