CVE-2025-66294

Description

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a Server-Side Template Injection (SSTI) vulnerability exists in Grav that allows authenticated attackers with editor permissions to execute arbitrary commands on the server and, under certain conditions, may also be exploited by unauthenticated attackers. This vulnerability stems from weak regex validation in the cleanDangerousTwig method. This vulnerability is fixed in 1.8.0-beta.27.

CVSS Details

CVSS Score

8.8

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:a:getgrav:grav:1.8.0:beta1:*:*:*:*:*:* - VULNERABLE

cpe:2.3:a:getgrav:grav:1.8.0:beta10:*:*:*:*:*:* - VULNERABLE

cpe:2.3:a:getgrav:grav:1.8.0:beta11:*:*:*:*:*:* - VULNERABLE

cpe:2.3:a:getgrav:grav:1.8.0:beta12:*:*:*:*:*:* - VULNERABLE

Grav CMS < 1.8.0-beta.27

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

...

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-66294
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-66294
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-66294/
[4] VulDB https://vuldb.com/cve/CVE-2025-66294
[5] https://github.com/getgrav/grav/commit/e37259527d9c1deb6200f8967197a9fa587c6458
[6] https://github.com/getgrav/grav/security/advisories/GHSA-662m-56v4-3r8f

Raw JSON Data

JSON

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