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CVE-2026-17739VulnerabilityPublished

Extensions · Insufficient Policy Enforcement

Source GCVE Database

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Authoritative record:CVE-2026-17739· Medium 4.2

Not known to be exploited · CVSS 4.2 Medium : upgrade to 151.0.7922.72 when convenient.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 3.1 base score
4.2Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 151.0.7922.72
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Jul 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 29 Oct 2026.

What to do

Upgrade Chrome to 151.0.7922.72.

Affected software

ProductAffectedFixed in
GoogleChromeAffected
  • >=151.0.7922.72 <151.0.7922.72
Fixed in
  • 151.0.7922.72

AI-suggested

A fix is available in Google Chrome version 151.0.7922.72 and later. Users and administrators should update to this version or later to remediate the vulnerability. Since this is a client-side application, patching the browser is the recommended mitigation. No additional vendor advisory content is provided, so check official Google Chrome release notes for confirmation and further guidance.

Description

Insufficient policy enforcement in Extensions in Google Chrome prior to 151.0.7922.72 allowed an attacker who convinced a user to install a malicious extension to inject arbitrary scripts or HTML (UXSS) via a crafted Chrome Extension. (Chromium security severity: Medium)

References

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