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.
References
| Link | Resource |
|---|---|
| https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663 | Patch |
| https://github.com/getgrav/grav/security/advisories/GHSA-r7fx-8g49-7hhr | Vendor Advisory Exploit Patch |
| https://github.com/getgrav/grav/security/advisories/GHSA-r7fx-8g49-7hhr | Vendor Advisory Exploit Patch |
Configurations
Configuration 1 (hide)
|
History
12 May 2026, 16:16
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:* cpe:2.3:a:getgrav:grav:2.0.0:beta1:*:*:*:*:*:* |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 4.8 |
| References | () https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663 - Patch | |
| References | () https://github.com/getgrav/grav/security/advisories/GHSA-r7fx-8g49-7hhr - Vendor Advisory, Exploit, Patch | |
| First Time |
Getgrav grav
Getgrav |
11 May 2026, 17:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/getgrav/grav/security/advisories/GHSA-r7fx-8g49-7hhr - |
11 May 2026, 16:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-11 16:17
Updated : 2026-05-12 16:16
NVD link : CVE-2026-42841
Mitre link : CVE-2026-42841
CVE.ORG link : CVE-2026-42841
JSON object : View
Products Affected
getgrav
- grav
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')