What is GHSA-q8cg-5m48-5c25?

GHSA-q8cg-5m48-5c25 is a security advisory published by GitHub Security Advisories with Medium severity. Duplicate Advisory: Grav: Stored XSS via Markdown audio/video media \u003csource\u003e URL

Why does GHSA-q8cg-5m48-5c25 have no CVE ID yet?

GitHub Security Advisories published this advisory directly to customers before NVD assigned a CVE ID. This is the embargo-window disclosure pattern — vendors notify customers on day 0; NVD's public record follows days to weeks later.

What is the CVSS v3 score of GHSA-q8cg-5m48-5c25?

GHSA-q8cg-5m48-5c25 has a CVSS v3 base score of 7.6, published by GitHub Security Advisories.

Which products are affected by GHSA-q8cg-5m48-5c25?

GHSA-q8cg-5m48-5c25 affects 1 product, including: composer/getgrav/grav:\u003c 2.0.15.

⚠ Withdrawn by GitHub Security Advisories

Withdrawn: September 17, 2026

GHSA-q8cg-5m48-5c25MediumCVSS 7.6Disclosed before NVD

Duplicate Advisory: Grav: Stored XSS via Markdown audio/video media <source> URL

Vendor

GitHub Security Advisories

Published

August 18, 2026

Last Modified

September 17, 2026

📋 Description

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-6qw9-4vv5-jr97. This link is maintained to preserve external references.

Original 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.

🎯 Affected products1

composer/getgrav/grav:< 2.0.15

🔗 References (5)

https://github.com/getgrav/grav/security/advisories/GHSA-6qw9-4vv5-jr97
https://nvd.nist.gov/vuln/detail/CVE-2026-75831
https://github.com/getgrav/grav/commit/aba291a59cab29ddce491175791888d8d0b65e20
https://www.vulncheck.com/advisories/grav-before-stored-xss-via-audio-video-source-url
https://github.com/advisories/GHSA-q8cg-5m48-5c25