CVE-2026-75831
Grav before 2.0.15 Stored XSS via audio/video source URL
- State
- Published
- Severity
- 5.1 Medium
- Published
- Aug 18, 2026
- Updated
- Oct 8, 2026
- Reserved
- Aug 18, 2026
Description
Grav before 2.0.15 contains a stored cross-site scripting vulnerability in the audio and video media rendering through the sourceParsedownElement method. The media URL fragment is concatenated unescaped into rawHtml source elements, allowing attackers to inject arbitrary HTML and JavaScript that executes in viewers' sessions.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 7.6 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
gravgetgrav |
|
References
- GitHub Security Advisory (GHSA-6qw9-4vv5-jr97)vendor-advisory
- Patch Commitpatch
- VulnCheck Advisory: Grav before 2.0.15 Stored XSS via audio/video source URLthird-party-advisory
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