CVE-2026-12034

State: Published
Severity: 8.3 High
Published: Jun 11, 2026
Updated: Jun 12, 2026
Reserved: Jun 11, 2026

Description

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)

Scores

CVSS	Score	Vector	Source
3.1	8.3 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-20 Insufficient validation of untrusted input

Affected Products

Product	Versions
ChromeGoogle	149.0.7827.115 to before 149.0.7827.115Affected

References

https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01962725236.html
https://issues.chromium.org/issues/519258799

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