Grav is a file-based Web platform. Prior to 2.0.0-beta.2, an authenticated user with page editing permissions can inject an executable JavaScript event-handler attribute into rendered image HTML through Grav's Markdown media action syntax. The issue is caused by Markdown image query parameters being converted into callable media actions. The public attribute() media method can be reached this way, allowing an editor to set an arbitrary HTML attribute name and value on the generated image element. This vulnerability is fixed in 2.0.0-beta.2.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663 Patch
- https://github.com/getgrav/grav/security/advisories/GHSA-r7fx-8g49-7hhr Exploit, Patch, Vendor Advisory
- https://github.com/getgrav/grav/security/advisories/GHSA-r7fx-8g49-7hhr Exploit, Patch, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.9 · getgravNVD modified 2026-10-26 18:10
Affected (CPE criteria) 2
cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*cpe:2.3:a:getgrav:grav:2.0.0:beta1:*:*:*:*:*:*
References 3
- https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663 Patch
- https://github.com/getgrav/grav/security/advisories/GHSA-r7fx-8g49-7hhr Exploit, Patch, Vendor Advisory
- https://github.com/getgrav/grav/security/advisories/GHSA-r7fx-8g49-7hhr Exploit, Patch, Vendor Advisory