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VulnerabilityPublished

CVE-2026-121223: Google Chrome · Observable Discrepancy

Affects Google ChromeSource CVE Database V5

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

Data as of 3 Nov 2026, 21:14 UTC

Severity
Medium

Rated Medium by the CNA (Chrome) · 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 Google 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 should update Google Chrome to version 157.0.8103.38 or later to remediate this vulnerability. The vendor has released an official fix, and applying this update fully addresses the issue.

Description

An observable discrepancy vulnerability in the Media component of Google Chrome prior to version 157.0.8103.38 allowed a remote attacker to leak cross-origin data via a crafted HTML page. This issue was assigned a medium severity by Chromium security. A fix is available in Chrome version 157.0.8103.38.

References

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