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VulnerabilityPublished

CVE-2026-12459: Google Chrome · Inappropriate Implementation

Affects Google ChromeSource CVE Database V5

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Not known to be exploited · CVSS 6.1 Medium : upgrade to 149.0.7827.155 when convenient.

Data as of 30 Oct 2026, 20:25 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 149.0.7827.155
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Jun 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 30 Oct 2026.

What to do

Upgrade Google Chrome to 149.0.7827.155.

Affected software

ProductAffectedFixed in
GoogleChromeAffected
  • >=149.0.7827.155 <149.0.7827.155
Fixed in
  • 149.0.7827.155

AI-suggested

Users should update Google Chrome to version 149.0.7827.155 or later, where this vulnerability is fixed. No other mitigation steps are indicated by the vendor advisory. Patch status is confirmed by the vendor advisory linked.

Description

Inappropriate implementation in Serial in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity: High)

References

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