CVE catalog
CVE-2026-42841
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 throu
- Severity
- Medium · CVSS 6.9
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.42% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | grav | Not reported | Not reported | unknown |
| Cpe | grav | Not reported | Not reported | unknown |
Fixed-version evidence
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663]
- [https://github.com/getgrav/grav/security/advisories/GHSA-r7fx-8g49-7hhr]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-42841]
- [https://osv.dev/vulnerability/CVE-2026-42841]
[FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]