CVE-2025-66305
Description
Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a Denial of Service (DoS) vulnerability was identified in the "Languages" submenu of the Grav admin configuration panel (/admin/config/system). Specifically, the Supported parameter fails to properly validate user input. If a malformed value is inserted—such as a single forward slash (/) or an XSS test string—it causes a fatal regular expression parsing error on the server. This leads to application-wide failure due to the use of the preg_match() function with an improperly constructed regular expression, resulting in an error. Once triggered, the site becomes completely unavailable to all users. This vulnerability is fixed in 1.8.0-beta.27.
AI Insight
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
getgrav/gravPackagist | < 1.8.0-beta.27 | 1.8.0-beta.27 |
Affected products
29cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*+ 27 more
- cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*range: >=1.7.48,<1.8.0
- cpe:2.3:a:getgrav:grav:1.8.0:beta10:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta11:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta12:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta13:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta14:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta15:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta16:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta17:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta18:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta19:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta1:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta20:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta21:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta22:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta23:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta24:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta25:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta26:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta2:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta3:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta4:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta5:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta6:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta7:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta8:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta9:*:*:*:*:*:*
- (no CPE)range: < 1.8.0-beta.27
Patches
Vulnerability mechanics
References
4- github.com/getgrav/grav/commit/ed640a13143c4177af013cf001969ed2c5e197eenvdPatchWEB
- github.com/getgrav/grav/security/advisories/GHSA-m8vh-v6r6-w7p6nvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-m8vh-v6r6-w7p6ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-66305ghsaADVISORY
News mentions
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