CVE-2026-12009: Input Validation
Chromium: CVE-2026-12009 Insufficient validation of untrusted input Accessibility
Other sources
Insufficient validation of untrusted input in Accessibility in Google Chrome on Mac prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)
— NVD
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
— Microsoft
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 to a fixed release to a version that resolves this vulnerability.
Fixed in 149.0.4022.69 - Upgrade
Upgrade
Chromium (Google Chrome / Edge Chromium-based)to a version that resolves this vulnerability.Fixed in 149.0.7827.115
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2026-12007
- CVE-2026-12008
- CVE-2026-12010
- CVE-2026-12011
- CVE-2026-12012
- CVE-2026-12014
- CVE-2026-12015
- CVE-2026-12016
- CVE-2026-12017
- CVE-2026-12018
- CVE-2026-12019
- CVE-2026-12020
- CVE-2026-12022
- CVE-2026-12023
- CVE-2026-12024
- CVE-2026-12025
- CVE-2026-12026
- CVE-2026-12027
- CVE-2026-12028
- CVE-2026-12029
- CVE-2026-12030
- CVE-2026-12031
- CVE-2026-12032
- CVE-2026-12033
- CVE-2026-12034
- CVE-2026-12035
Frequently Asked Questions
What is the severity of CVE-2026-12009?
CVE-2026-12009 has a high severity rating of 8.3 on the CVSS scale.
How do I fix CVE-2026-12009?
To fix CVE-2026-12009, update Google Chrome to version 149.0.7827.115 or later.
What type of vulnerability is CVE-2026-12009?
CVE-2026-12009 is classified as an input validation vulnerability.
What can an attacker do with CVE-2026-12009?
An attacker can potentially perform a sandbox escape via a crafted HTML page if they compromise the renderer process.
Which software is affected by CVE-2026-12009?
CVE-2026-12009 affects Google Chrome on Mac prior to version 149.0.7827.115.