CVE-2026-42612CWE-79

Grav: Publisher-Level Stored XSS via Unquoted Event Attributes

High · published May 11, 2026

CVSS v3.1
8.5
EPSS
0%
Percentile
18.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00274 · 18.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-05-11T15:22Z
EPSS history
Timeline
  • 11 MAY 15:22Z
    Grav: Publisher-Level Stored XSS via Unquoted Event Attributes
    cvelistv5