CVE-2026-12034: Input Validation
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)
Credit
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 149.0.7827.114 - Upgrade
Upgrade
Google Chrome (Linux)to a version that resolves this vulnerability.Fixed in 149.0.7827.115
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2026-7922
- CVE-2026-13033
- CVE-2026-9970
- CVE-2026-10969
- CVE-2026-10003
- CVE-2026-9933
- CVE-2026-9993
- CVE-2026-9961
- CVE-2026-9995
- CVE-2026-12439
- CVE-2026-10905
- CVE-2026-8557
- CVE-2026-9903
- CVE-2026-7339
- CVE-2026-8559
- CVE-2026-6920
- CVE-2026-8524
- CVE-2026-10007
- CVE-2026-12008
- CVE-2026-12440
- CVE-2026-6360
- CVE-2026-12441
- CVE-2026-7348
Frequently Asked Questions
What is the severity of CVE-2026-12034?
The severity of CVE-2026-12034 is rated high with a CVSS score of 8.3.
How do I fix CVE-2026-12034?
To fix CVE-2026-12034, update Google Chrome to version 149.0.7827.115 or later.
What type of vulnerability is CVE-2026-12034?
CVE-2026-12034 is an input validation vulnerability in the Linux Toolkit Theming of Google Chrome.
What impact does CVE-2026-12034 have on users?
CVE-2026-12034 could allow a remote attacker to potentially perform a sandbox escape through a malicious file.
Which versions of Google Chrome are affected by CVE-2026-12034?
CVE-2026-12034 affects Google Chrome on Linux prior to version 149.0.7827.115.