Vulnerability · Published May 11, 2026 · Assigned by GitHub_M

CVE-2026-42612Grav: Publisher-Level Stored XSS via Unquoted Event Attributes

High 8.5

In plain English

A high-severity cross-site scripting in grav from getgrav. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.5High

Exploit odds (30 days)0.2%top 85.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	getgrav/grav	2.0.0-beta.2	GHSA-9695-8fr9-hw5q

Affected products (as reported)

Vendor	Product	Versions
getgrav	grav	< 2.0.0-beta.2

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

References

https://github.com/getgrav/grav/security/advisories/GHSA-9695-8fr9-hw5q x_refsource_CONFIRM
https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663 x_refsource_MISC