CVE-2026-75831

High

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.

SeverityHigh

CVSS7.6

Exploit probability—

ProductGetgrav/grav

PublishedAug 18, 2026

First seenAug 18, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

getgrav/grav2.0.15 or later

Patches

github.com/getgrav/grav/commit/aba291a59cab29ddce491175791888d8d0b65e20

Vendor advisories

github.com/getgrav/grav/security/advisories/GHSA-6qw9-4vv5-jr97

Affected products

Product	Affected versions	Fixed in
getgrav/gravPackagist	v < 2.0.15	2.0.15

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