CVE-2026-42612

Grav: Publisher-Level Stored XSS via Unquoted Event Attributes

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a stored Cross-Site Scripting (XSS) vulnerability in getgrav/grav allows publisher-level accounts to execute arbitrary JavaScript. The issue arises from a blacklist bypass in the detectXss() function when handling unquoted HTML event attributes. This vulnerability is fixed in 2.0.0-beta.2.

Affected

getgrav · grav

CVSS v3.1 NVD

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

CVSS v3.1 GITHUB

8.5 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

EPSS

0.27% chance of exploitation in the next 30 days, 19th percentile

Published

2026-05-11

Proof-of-concept exploits (1)

• advisories/GHSA-9695-8fr9-hw5q

Security advisories

• getgrav/grav/security/advisories/GHSA-9695-8fr9-hw5q
• getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663

References

• CVE Record
• NVD entry