Disabled Grav accounts keep API access through existing sessions
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-613.
Summary
The Grav API plugin (grav-plugin-api) before 1.0.36 has an improper session validation flaw that lets disabled accounts keep API access. SessionAuthenticator does not enforce account state, so disabled users can reuse an already authorized browser or remember-me session to call API endpoints until it expires. A disabled user with an existing session can exploit it over the network, defeating operator revocation. The weakness is classified as CWE-613.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
The Grav API plugin (grav-plugin-api) before 1.0.36 contains an improper session validation vulnerability that allows disabled accounts to keep API access, because SessionAuthenticator does not enforce account state. Disabled users can reuse an already authorized browser or remember-me session to call API endpoints until expiry, defeating operator revocation.
Why it matters now
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
Remediation
Update the Grav API plugin to version 1.0.36.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA grav-plugin-api (getgrav) Fixed in 1.0.36
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
getgrav grav-plugin-api 1.0.36
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-71133 Grav API Plugin Privilege Escalation via Scalar Access GrantsPriority LOW 39
Timeline
- 2026-10-12 Threatist record created from CVE-2026-109320
- 2026-10-12 Alias added: GHSA-wcc2-xcpr-vc5h
- 2026-10-13 CISA SSVC decision points changed
References
More getgrav vulnerabilities
- 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
Sources
- CVE-2026-109320 · CVE Program
- CVE-2026-109320 · NVD
- FIRST EPSS
- GHSA-wcc2-xcpr-vc5h · GitHub Advisory Database · CC BY 4.0
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