Use after free in Extensions in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted Chrome Extension. (Chromium security severity: Critical)

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Workaround

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History

Fri, 29 May 2026 17:30:00 +0000

Type Values Removed Values Added
First Time appeared Apple
Apple macos
Linux
Linux linux Kernel
Microsoft
Microsoft windows
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Vendors & Products Apple
Apple macos
Linux
Linux linux Kernel
Microsoft
Microsoft windows

Fri, 29 May 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.0, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

cvssV3_1

{'score': 9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'}


Fri, 29 May 2026 12:15:00 +0000

Type Values Removed Values Added
Title Use‑After‑Free in Chrome Extensions Enabling Remote Sandbox Escape chromium-browser: Use after free in Extensions
Weaknesses CWE-825
References
Metrics threat_severity

None

cvssV3_1

{'score': 9.0, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H'}

threat_severity

Critical


Fri, 29 May 2026 01:00:00 +0000

Type Values Removed Values Added
Title Use‑After‑Free in Chrome Extensions Enabling Remote Sandbox Escape

Fri, 29 May 2026 00:00:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome

Thu, 28 May 2026 22:45:00 +0000

Type Values Removed Values Added
Description Use after free in Extensions in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted Chrome Extension. (Chromium security severity: Critical)
Weaknesses CWE-416
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-05-29T14:53:08.767Z

Reserved: 2026-05-28T17:24:44.688Z

Link: CVE-2026-9891

cve-icon Vulnrichment

Updated: 2026-05-29T14:53:01.467Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-28T23:16:47.083

Modified: 2026-05-29T17:15:18.660

Link: CVE-2026-9891

cve-icon Redhat

Severity : Critical

Publid Date: 2026-05-27T00:00:00Z

Links: CVE-2026-9891 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-29T13:45:45Z

Weaknesses