CVE-2025-66844 json
Grav may be vulnerable to SSRF attack via Twig Templates
published 2025-12-15 10 mo ago modified 2026-10-23 16 d ago also GHSA-729w-j79f-2c34 , EUVD-2025-203400
- cvss
- 9.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
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
Patch / fix
- getgrav grav 1.7.49.5
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 10 mo ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/Yohane-Mashiro/grav_cve/issues/2 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| CNA | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | getgrav/grav | <=1.7.49.5 |
no fix listed |
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/Yohane-Mashiro/grav_cve/issues/2
web, exploit, issue-tracking, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-66844
advisory
-
github.com
/getgrav/grav
package
Sources
- CVE List CVE-2025-66844
- GitHub Advisory GHSA-729w-j79f-2c34
- NVD CVE-2025-66844
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