CVE-2026-85601

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

MEDIUM
5.4
CVSS Score
Published: September 4, 2026 at 11:30 AM UTC
Updated: September 10, 2026 at 04:17 PM UTC
1 product affected across 1 vendorGrav

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

95%
v < 2.0.20
Vendor states this is fixed in 2.0.20 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

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