CVE-2026-12034CWE-20

Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Linux prior to 149.0.7827.115 allowed a remote attacker who had…

High · published June 11, 2026

CVSS v3.1
8.3
EPSS
0%
Percentile
7.2
In the wild
Unconfirmed
What it is

Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Linux prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a malicious file. (Chromium security severity: High)

The record
Technical detail
CVSS v3.1
8.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00180 · 7.2th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2026-06-11T20:48Z
EPSS history
Timeline
  • 11 JUN 20:48Z
    Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Linux prior to 149.0.7827.115 allowed a remote attacker who had…
    cvelistv5