Description
Incorrect authorization in DevTools in Google Chrome prior to 155.0.8059.39 allowed a local attacker to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Low)
Published: 2026-10-06
Score: 5.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Local Privilege Escalation
Action: Apply patch
AI Analysis

Impact

An incorrect authorization check within the DevTools component of Google Chrome allows a local attacker to serve a crafted HTML page and force the browser to bypass system access restrictions, effectively escalating privileges to the level of the user. This flaw, identified as CWE-863, bypasses user‑level authorization controls without requiring any additional privileges or remote interaction.

Affected Systems

The issue affects all users running Google Chrome versions older than 155.0.8059.39 on desktop platforms where DevTools is enabled. The fix was released in the October 2026 stable channel update.

Risk and Exploitability

Chromium labels the vulnerability as low severity, and it is not listed in the CISA KEV catalog. The CVSS score is 5.4, confirming low severity. The attack vector is inferred to be local, requiring the attacker to have some presence on the target machine or the ability to prompt the user to open the malicious page in Chrome. Exploitation is therefore dependent on the local security posture and user behavior. The EPSS score of 0.0012 indicates a very low but nonzero exploitation probability.

Generated by OpenCVE AI on October 7, 2026 at 23:21 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade Chrome to version 155.0.8059.39 or later
  • Block DevTools access for local users by enforcing the Chrome policy setting that disables DevTools for non‑administrative accounts
  • Restrict DevTools usage to privileged accounts only through Chrome policy and monitor for unauthorized accesses

Generated by OpenCVE AI on October 7, 2026 at 23:21 UTC.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4833-1 chromium security update
Debian DSA Debian DSA DSA-6553-1 chromium security update
History

Sat, 10 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Title chromium-browser: Incorrect authorization in DevTools
References
Metrics threat_severity

None

 threat_severity

Low

Thu, 08 Oct 2026 13:00:00 +0000

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

Wed, 07 Oct 2026 23:45:00 +0000

Type Values Removed Values Added
Title Local Privilege Escalation via DevTools Authorization Bypass in Google Chrome

Wed, 07 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}

ssvc

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

Wed, 07 Oct 2026 02:30:00 +0000

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

Wed, 07 Oct 2026 00:15:00 +0000

Type Values Removed Values Added
Title Local Privilege Escalation via DevTools Authorization Bypass in Google Chrome

Tue, 06 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
Description Incorrect authorization in DevTools in Google Chrome prior to 155.0.8059.39 allowed a local attacker to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Low)
Weaknesses CWE-863
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-10-07T20:34:19.158Z

Reserved: 2026-10-06T16:34:44.683Z

Link: CVE-2026-106306

cve-icon Vulnrichment

Updated: 2026-10-07T20:24:24.199Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-06T19:17:58.770

Modified: 2026-10-08T13:02:08.300

Link: CVE-2026-106306

cve-icon Redhat

Severity : Low

Publid Date: 2026-10-06T18:41:35Z

Links: CVE-2026-106306 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-07T23:30:07Z

Weaknesses