In grav <1.7.49.5, a SSRF (Server-Side Request Forgery) vector may be triggered via Twig…
Priority HIGH 80CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub.
Summary
In grav <1.7.49.5, a SSRF (Server-Side Request Forgery) vector may be triggered via Twig templates when page content is processed by Twig and the configuration allows undefined PHP functions to be registered
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00291 21st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | getgrav/grav (Packagist) | up to 1.7.49.5 | — | No fix listed | GHSA-729w-j79f-2c34 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- getgrav/grav (Packagist) Vendor— Affected up to 1.7.49.5 Fixed in — No fix listed GHSA-729w-j79f-2c34
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-66844
- 2026-10-03 Alias added: GHSA-729w-j79f-2c34
References
More getgrav Grav vulnerabilities
- 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-2021-22428 GravCMS 1.10.7 - Arbitrary YAML Write/Update (Unauthenticated) (2) CVSS 4.0CRITICAL 9.3
- TI-2026-30888 Grav: Unauthenticated Path Traversal & Arbitrary File Write in FormFlash component. CVSS 4.0HIGH 8.8
- TI-2025-40773 Security Sandbox Bypass with SSTI (Server Side Template Injection) in the Grav CMS CVSS 3.1HIGH 8.8
- TI-2025-40768 Grav is vulnerable to RCE via SSTI through Twig Sandbox Bypass CVSS 4.0HIGH 8.7
- TI-2023-17087 Grav Server-side Template Injection via Insufficient Validation in filterFilter CVSS 3.1HIGH 8.8
Sources
- CVE-2025-66844 · CVE Program
- CVE-2025-66844 · NVD
- FIRST EPSS
- GHSA-729w-j79f-2c34 · GitHub Advisory Database · CC BY 4.0
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