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CVE-2026-17781VulnerabilityPublished

Extensions · Inappropriate Implementation

Affects chromeSource GCVE Database

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Authoritative record:CVE-2026-17781· Medium 4.3

Not known to be exploited · CVSS 4.3 Medium : upgrade to 151.0.7922.72 when convenient.

Data as of 29 Oct 2026, 07:15 UTC

CVSS 3.1 base score
4.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Affects
Google Chrome prior to 151.0.7922.72
Patch
Available – fixed in 151.0.7922.72
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/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 google/chrome to 151.0.7922.72.

Affected software

ProductAffectedFixed in
Googlegoogle/chromepkg:deb/google/chromeOther threatsAffected
  • <151.0.7922.72
Fixed in
  • 151.0.7922.72

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users and administrators should update Google Chrome to version 151.0.7922.72 or later, where this vulnerability is fixed. Since this is a client-side vulnerability requiring user installation of a malicious extension, avoiding installation of untrusted extensions also mitigates risk. Patch status is inferred from the version boundary; check official Google Chrome advisories for confirmation and further guidance.

Description

Inappropriate implementation in Extensions in Google Chrome prior to 151.0.7922.72 allowed an attacker who convinced a user to install a malicious extension to leak cross-origin data via a crafted Chrome Extension. (Chromium security severity: Medium)

References

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