CVE-2026-85601

MEDIUM 5.4

Grav Admin before 2.0.20 Cross-Site Scripting via marked.js

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	getgrav
Product	grav
Published	Sep 4, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

getgrav / grav

0 < 2.0.20

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/getgrav/grav/security/advisories/GHSA-752r-88j4-vxm3 vulncheck.com: https://www.vulncheck.com/advisories/grav-admin-before-2.0.20-cross-site-scripting-via-marked-js

Credits

🔍 alham-rizvi