CVE-2026-85601

Medium

Description

Grav Admin before 2.0.20 fails to sanitize output from marked.parse() before injecting it into the DOM via Svelte's {@html} directive in MarkdownEditor and MarkdownModal components. Attackers can inject javascript: URI schemes in plugin or theme changelogs to execute arbitrary code in authenticated admin sessions without requiring site access.

SeverityMedium

CVSS5.4

Exploit probability—

Product

Grav

PublishedSep 4, 2026

First seenSep 4, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

getgrav grav2.0.20 or later

Vendor advisories

github.com/getgrav/grav/security/advisories/GHSA-752r-88j4-vxm3

Affected products

Product	Affected versions	Fixed in
getgrav grav	v < 2.0.20	2.0.20

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