Improper input validation in CacheStorage in Google Chrome prior to 156.0.8078.79 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
CVE-2026-85046Google Chromium V8 Type Confusion Vulnerability
Known exploited — Google Chromium V8 Type Confusion Vulnerability
CISA confirmed this vulnerability is used in real attacks on 04.09.2026. Remediation deadline for US federal agencies: 18.09.2026.
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_01882797386.html ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-85046
Description
Type confusion in V8 in Google Chrome prior to 152.0.7977.82 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
References and patches
- https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_01882797386.html Release NotesVendor Advisory
- https://issues.chromium.org/issues/542403045
- https://github.com/Serotav/Writeups/blob/77556c57999805fa7815a114da51d91cf24fbea9/v8/When_Sorting_Leads_To_Co… ExploitThird Party Advisory
- https://github.com/v8/v8/commit/e0562d87ad9c17042b581582c99237d798572e67 Patch
- https://news.ycombinator.com/item?id=49570669 Issue TrackingThird Party Advisory
- https://serotav.github.io/Writeups/v8/when-sorting-leads-to-confusion/ ExploitThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-85046 US Government Resource
CPE matches (NVD) (2)
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*< 152.0.7977.82cpe:2.3:a:google:v8:*:*:*:*:*:*:*:*< 15.3.48