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CVE-2026-42612

Grav: Publisher-Level Stored XSS via Unquoted Event Attributes

Published: May 11, 2026Updated: May 12, 2026 Sources: CVE List NVDCWE-79
NVD MITRE
8.5CVSSHIGH
EPSS Score
0.2%
Top 86.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:HI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

gravgetgrav
On-prem
Web & CMS Plugins / cms-core
getgravoss-projectWeb & CMS Pluginsaka grav, grav-plugin-admin, getgrav/grav

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

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

Timeline

Published
May 11, 2026
Last Updated
May 12, 2026

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