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TI-2026-84808 Aliases CVE-2026-120930GHSA-4vp5-8fmq-v52x

Blink authorization flaw in Google Chrome allows origin policy bypass

Priority LOW 24CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-863.

Summary

Google Chrome prior to 156.0.8078.47 is affected. An incorrect authorization check (CWE-863) in Blink lets a remote attacker bypass web origin policy. The attacker needs a user to open a crafted HTML page, and the impact is limited to low confidentiality and integrity loss.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

Incorrect authorization in Blink in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00177 7th percentileScored 2026-11-07
Fix Fixed Chrome (Google): 156.0.8078.47

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GoogleChrome156.0.8078.47 to before 156.0.8078.47156.0.8078.47Patch availableCNA
  • Chrome VendorGoogle Affected 156.0.8078.47 to before 156.0.8078.47 Fixed in 156.0.8078.47 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*before 156.0.8078.47VulnerableGoogle
  • cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* Versions before 156.0.8078.47 Vulnerable ·Google

Remediation

Update Google Chrome to version 156.0.8078.47.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

  • Fix · CNA Chrome (Google) Fixed in 156.0.8078.47

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Google Chrome 156.0.8078.47

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-84809 Out-of-bounds write in WebGL in Google Chrome on AndroidPriority MEDIUM 43
    Show all 2 records →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-120930
  2. 2026-11-04 Affected versions changed · Red Hat
  3. 2026-11-04 CVSS score added · Red Hat
  4. 2026-11-04 Alias added: GHSA-4vp5-8fmq-v52x
  5. 2026-11-04 CVSS score added · CISA ADP
  6. 2026-11-04 CISA SSVC decision points changed
  7. 2026-11-05 CVSS score changed · Red Hat

References

Advisory 1

Other 1

  • TI-2025-09686 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-07390 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04898 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04600 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04346 Use after free in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6
See all 7586 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences