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VulnerabilityPublished

CVE-2026-121161: Google Chrome · Information Leak

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, 21:43 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 and administrators should update Google Chrome to version 157.0.8103.38 or later, where this vulnerability is fixed. No additional mitigation steps are required once the update is applied.

Description

An information leak vulnerability exists in the BackgroundFetch feature of Google Chrome versions prior to 157.0.8103.38. This flaw allows a remote attacker to obtain cross-origin data by tricking a user into visiting a crafted HTML page. The issue has been fixed in version 157.0.8103.38.

References

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