Information disclosure in Grav Clockwork debugger token via Twig sandbox
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-200.
Summary
Grav from 2.0.22 before 2.1.7 contains an information disclosure flaw in its sandbox redaction list, which omits system.debugger.token. A user with page editor rights can render the Clockwork debugger token through editor-authored Twig and use it to read profiler records containing configuration, request metadata, and database queries (CWE-200).
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
Grav from 2.0.22 before 2.1.7 contains an information disclosure vulnerability that allows page editors to read the Clockwork debugger token because the sandbox redaction list omits system.debugger.token. Attackers can render the token through editor-authored Twig and supply it as X-Clockwork-Auth to read profiler records with configuration, request metadata, and database queries.
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
Upgrade getgrav grav to version 2.1.7.
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-2026-71140 Memory exhaustion in Grav via oversized image transformsPriority LOW 31
Timeline
- 2026-10-12 Threatist record created from CVE-2026-109315
- 2026-10-12 Alias added: GHSA-r6g3-r4xj-3p43
- 2026-10-13 Priority changed: MEDIUM → LOW
- 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-2026-109315 · CVE Program
- CVE-2026-109315 · NVD
- FIRST EPSS
- GHSA-r6g3-r4xj-3p43 · GitHub Advisory Database · CC BY 4.0
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