Vulnerability · CVE-2026-106366
Incomplete cleanup in CustomTabs in Google Chrome on on Android prior to 155.0.8059.39 allowed a remote attacker to bypass web origin policy via a crafted HTML page.
Published Oct 6, 2026 · catalog updated Oct 14, 2026 · Incomplete cleanup in CustomTabs
Check if you run it
No confirmed exploitation is on record for CVE-2026-106366. EPSS is 0.22%. Act only if a listed version of Incomplete cleanup in CustomTabs is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (Incomplete cleanup in CustomTabs).
- No version range is stored. A customer cannot check an installed version against this record.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Medium5.4
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.22%
- Remediation
- Advisory link
- Affected products
- cpe google/chrome
Incomplete cleanup in CustomTabs in Google Chrome on on Android prior to 155.0.8059.39 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe google/chromeversion unspecified
How to fix CVE-2026-106366
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-106366. EPSS is 0.22%. Act only if a listed version of Incomplete cleanup in CustomTabs is installed.
Which versions are affected?
Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-459. EPSS 0.22%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 6, 2026 · NIST NVD
Detected
Incomplete cleanup in CustomTabs in Google Chrome on on Android prior to 155.0.8059.39 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)
Oct 14, 2026 · NIST NVD
Updated
Incomplete cleanup in CustomTabs in Google Chrome on on Android prior to 155.0.8059.39 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)
Oct 14, 2026 · NIST NVD
Updated
Incomplete cleanup in CustomTabs in Google Chrome on on Android prior to 155.0.8059.39 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)
Sources
- CVE.orgVulnerability recordCVE-2026-106366
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-106366
30-day exploitation probability 0.2%
first.org - NIST NVDVulnerability recordCVE-2026-106366
Incomplete cleanup in CustomTabs in Google Chrome on on Android prior to 155.0.8059.39 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.