Cross-Site Scripting Vulnerability in Grav Admin by Get Grav
CVE-2026-85601

5.1MEDIUM

Key Information:

Vendor

Getgrav

Status
Grav
Vendor
CVE Published:
4 September 2026

What is CVE-2026-85601?

Grav Admin versions prior to 2.0.20 are vulnerable to a cross-site scripting attack due to inadequate sanitization of output in the marked.parse() function. This vulnerability enables attackers to inject malicious javascript: URI schemes into plugin or theme changelogs, which can lead to arbitrary code execution during authenticated admin sessions. This risk is particularly concerning because it doesn't require direct access to the site, potentially compromising the integrity and security of the Grav installation.

Affected Version(s)

grav 0 < 2.0.20

grav 2.0.20

References

https://github.com/getgrav/grav/security/advisories/GHSA-...
vendor-advisory
https://www.vulncheck.com/advisories/grav-admin-before-2....
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

alham-rizvi
.