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CVE-2026-121253VulnerabilityPublished

DevTools · Missing Authorization

Source GCVE Database

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Authoritative record:CVE-2026-121253· Low

Not known to be exploited : upgrade to 157.0.8103.38 when convenient.

Data as of 3 Nov 2026, 22:43 UTC

Severity
Low

Rated Low by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in 157.0.8103.38

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.

What to do

Upgrade Chrome to 157.0.8103.38.

Affected software

ProductAffectedFixed in
GoogleChromeAffected
  • >=157.0.8103.38 <157.0.8103.38
Fixed in
  • 157.0.8103.38

AI-suggested

Users and administrators should update Google Chrome to version 157.0.8103.38 or later where this issue is fixed. Until patched, users should be cautious about installing Chrome extensions from untrusted sources to reduce the risk of social engineering attacks.

Description

A missing authorization vulnerability in DevTools of Google Chrome versions prior to 157.0.8103.38 allows a remote attacker to bypass site isolation by leveraging social engineering and a crafted Chrome extension. The vulnerability has been assigned a low severity by Chromium security.

References

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