Description
Incorrect authorization in Extensions in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass system access restrictions via a crafted Chrome extension. (Chromium security severity: Medium)
Published: 2026-11-03
Score: n/a
EPSS: n/a
KEV: No
Impact: Privilege Escalation via Chrome Extension
Action: Apply Patch
AI Analysis

Impact

This vulnerability is an incorrect authorization flaw in Chrome extensions that permits a remote attacker to bypass system access restrictions by installing a crafted extension. The flaw is classified as CWE-863. Based on the description, it is inferred that an attacker who succeeds may be able to execute privileged actions on the user’s machine, potentially compromising confidentiality, integrity, and availability of local resources.

Affected Systems

The flaw applies to Google Chrome on all platforms where the stable channel is available, specifically versions earlier than 157.0.8103.38. Users running any pre‑157.0.8103.38 build are affected.

Risk and Exploitability

The EPSS score is unavailable and the vulnerability is not listed in CISA’s KEV catalog, indicating an unknown or low exploitation density. Chromium’s advisory assigns a Medium severity rating. The likely attack vector involves a malicious or compromised extension being installed, after which the authorization bypass allows privileged operations. Based on the description, it is inferred that no publicly available exploit code is cited, but the vulnerability could potentially be leveraged via social engineering or a compromised extension store.

Generated by OpenCVE AI on November 3, 2026 at 23:20 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade Google Chrome to version 157.0.8103.38 or later.
  • Remove or disable any untrusted extensions and review permissions of installed extensions.
  • Use Chrome policy or management tools to restrict extensions with elevated privileges.

Generated by OpenCVE AI on November 3, 2026 at 23:20 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Tue, 03 Nov 2026 23:45:00 +0000

Type Values Removed Values Added
Title Chrome Extension Authorization Bypass Enabling System Access
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome

Tue, 03 Nov 2026 20:45:00 +0000

Type Values Removed Values Added
Description Incorrect authorization in Extensions in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass system access restrictions via a crafted Chrome extension. (Chromium security severity: Medium)
Weaknesses CWE-863
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-11-03T20:42:42.484Z

Reserved: 2026-11-03T10:26:36.221Z

Link: CVE-2026-121193

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-03T21:17:27.950

Modified: 2026-11-03T21:17:28.050

Link: CVE-2026-121193

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-03T23:30:06Z

Weaknesses