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VulnerabilityPublished

CVE-2026-11280: Google Chrome · Insufficient Validation of Untrusted Input

Affects Google ChromeSource CVE Database V5

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Not known to be exploited · CVSS 4.3 Medium : upgrade to 149.0.7827.53 when convenient.

Data as of 30 Oct 2026, 11:52 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 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 149.0.7827.53
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 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 149.0.7827.53.

Affected software

ProductAffectedFixed in
GoogleChromeAffected
  • >=149.0.7827.53 <149.0.7827.53
Fixed in
  • 149.0.7827.53

AI-suggested

Users and administrators should monitor for official updates and apply any released patches promptly. Until a patch is confirmed, caution is advised when interacting with untrusted content on affected versions.

Description

CVE-2026-11280 is a vulnerability in Google Chrome on iOS prior to version 149.0.7827.53 where insufficient validation of untrusted input in the Signin feature allows remote attackers to perform UI spoofing via crafted HTML pages. The issue is classified with medium severity and has a CVSS score of 4.3. No known exploits are reported in the wild. The vulnerability relates to improper input validation (CWE-20).

References

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