Description
Use after free in Workers in Google Chrome prior to 153.0.8010.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)
Published: 2026-09-15
Score: 9.6 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution
Action: Immediate Patch
AI Analysis

Impact

A use‑after‑free flaw exists in the Workers implementation of Google Chrome versions before 153.0.8010.47. The flaw can be triggered by a crafted HTML page, allowing an attacker to run arbitrary code outside the browser sandbox. This vulnerability is classified as a critical security issue, providing the attacker with full control of the system on which Chrome is running.

Affected Systems

Google Chrome users affected by this vulnerability are those running any build prior to version 153.0.8010.47, including all 152.x releases and earlier. Chrome versions 153.0.8010.47 and later contain the fix.

Risk and Exploitability

The vulnerability has a CVSS score of 9.6, indicating a high severity for remote exploitation. The EPSS score is below 1 %, which suggests that, while the attack is feasible, it has not yet been widely observed in the wild and is not listed in CISA’s KEV catalogue. The attack vector is inferred to be a malicious web page that the victim opens in Chrome, taking advantage of the susceptible Workers implementation to achieve code execution beyond the usual sandbox constraints.

Generated by OpenCVE AI on September 23, 2026 at 16:24 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade Google Chrome to version 153.0.8010.47 or later.
  • Configure Chrome to disable Web Workers when an update cannot be applied immediately, for example by setting the relevant policy flag.
  • Apply a strict Content Security Policy to limit the execution of untrusted scripts and reduce the opportunity for malicious worker creation.

Generated by OpenCVE AI on September 23, 2026 at 16:24 UTC.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4790-1 chromium security update
Debian DSA Debian DSA DSA-6506-1 chromium security update
History

Thu, 24 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

Wed, 23 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
Title chromium-browser: chromium-browser: Use after free in Workers
Weaknesses CWE-825
References
Metrics threat_severity

None

 threat_severity

Important

Fri, 18 Sep 2026 13:45:00 +0000

Type Values Removed Values Added
Title Use‑After‑Free in Chrome Workers Enables Remote Code Execution

Wed, 16 Sep 2026 19:15:00 +0000

Type Values Removed Values Added
Title Use‑After‑Free in Chrome Workers Enables Remote Code Execution

Wed, 16 Sep 2026 00:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}

ssvc

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

Wed, 16 Sep 2026 00:00:00 +0000

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

Tue, 15 Sep 2026 20:45:00 +0000

Type Values Removed Values Added
Description Use after free in Workers in Google Chrome prior to 153.0.8010.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)
Weaknesses CWE-416
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-09-17T03:56:06.498Z

Reserved: 2026-09-14T22:53:06.881Z

Link: CVE-2026-91749

cve-icon Vulnrichment

Updated: 2026-09-15T23:20:15.596Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-15T21:16:48.833

Modified: 2026-09-24T14:12:37.780

Link: CVE-2026-91749

cve-icon Redhat

Severity : Important

Publid Date: 2026-09-15T20:41:26Z

Links: CVE-2026-91749 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-23T16:30:08Z

Weaknesses