CVE-2026-75831

HIGH 7.6

Grav before 2.0.15 Stored XSS via audio/video source URL

CVSS Score

7.6

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	getgrav
Product	grav
Published	Aug 18, 2026
Last Updated	Aug 18, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

None

Affected Versions

getgrav / grav

0 < 2.0.15

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/getgrav/grav/security/advisories/GHSA-6qw9-4vv5-jr97 github.com: https://github.com/getgrav/grav/commit/aba291a59cab29ddce491175791888d8d0b65e20 vulncheck.com: https://www.vulncheck.com/advisories/grav-before-stored-xss-via-audio-video-source-url

Credits

🔍 alimony