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TI-2026-84583 Aliases CVE-2026-121031GHSA-xqf6-wh3f-q59w

Missing authorization in Chrome PDF enables origin policy bypass

Priority LOW 22CWE-862Published · Updated

Key facts

Attack vector
—
Privileges required
—
User interaction
—
Attack complexity
—
Impact type
Security bypass
Confidentiality · integrity · availability
—
Fix status
Fixed

No CVSS vector from any source. Fix status from CNA. Impact type from CWE-862.

Summary

Google Chrome before 157.0.8103.38 has a missing authorization check in its PDF component (CWE-862). A remote attacker can use a crafted Chrome extension to bypass the web origin policy and reach a privileged page.

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

Description from the CNA

Missing authorization in PDF in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass web origin policy into a privileged page via a crafted Chrome extension. (Chromium security severity: Medium)

Why it matters now

EPSS 0.0022 12th percentileScored 2026-11-07
Fix Fixed Chrome (Google): 157.0.8103.38

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
GoogleChrome157.0.8103.38 to before 157.0.8103.38157.0.8103.38Patch availableCNA
  • Chrome VendorGoogle Affected 157.0.8103.38 to before 157.0.8103.38 Fixed in 157.0.8103.38 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*——Google
  • cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* Versions — — ·Google

Remediation

Update Google Chrome to 157.0.8103.38 or later, which fixes the flaw.

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

  • Fix · CNA Chrome (Google) Fixed in 157.0.8103.38

Fixed in the same release

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

  • Release ·

    Google Chrome 157.0.8103.38

    213 records Highest priority Priority MEDIUM 96 MEDIUM, 117 LOW

    Other records, highest priority first

    • TI-2026-84793 Use after free in Chrome TabStrip lets remote attackers run codePriority MEDIUM 43
    • TI-2026-84786 Use after free in Google Chrome Extensions allows code executionPriority MEDIUM 43
    • TI-2026-84785 Buffer overflow in ANGLE in Google Chrome allows code executionPriority MEDIUM 43
    Show all 213 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-2026-121031
  2. 2026-11-03 Alias added: GHSA-xqf6-wh3f-q59w
  3. 2026-11-04 Affected versions changed · Red Hat
  4. 2026-11-04 CVSS score added · Red Hat

References

Other 2

  • 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 17247 →

Sources

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