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Missing authorization in Google Chrome WebAppInstalls

Priority LOW 38CWE-862Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-862.

Summary

Google Chrome prior to 155.0.8059.39 is affected. Missing authorization in WebAppInstalls (CWE-862) lets a page perform actions it should not be allowed to perform. A remote attacker who has compromised the renderer process and uses social engineering can potentially execute arbitrary code outside the sandbox via a crafted HTML page.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Missing authorization in WebAppInstalls in Google Chrome prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00396 34th percentileScored 2026-11-07
Fix Fixed Chrome (Google): 155.0.8059.39

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
GoogleChrome155.0.8059.39 to before 155.0.8059.39155.0.8059.39Patch availableCNA
  • Chrome VendorGoogle Affected 155.0.8059.39 to before 155.0.8059.39 Fixed in 155.0.8059.39 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*before 155.0.8059.39VulnerableGoogle
  • cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* Versions before 155.0.8059.39 Vulnerable ·Google

Remediation

Update Google Chrome to version 155.0.8059.39, which contains the fix. The sources list no fixed version for other Chrome releases.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Chrome (Google) Fixed in 155.0.8059.39

Fixed in the same release

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

  • Release ·

    Google Chrome 155.0.8059.39

    247 records Highest priority Priority MEDIUM 54 MEDIUM, 193 LOW

    Other records, highest priority first

    • TI-2026-68849 Uninitialized resource in WebAudio in Google Chrome exposes memoryPriority MEDIUM 62
    • TI-2026-68659 Chrome Chromoting on Mac flaw lets remote attackers bypass access restrictionsPriority MEDIUM 47
    • TI-2026-68758 Incomplete cleanup in Chrome Chromoting on Mac allows access bypassPriority MEDIUM 45

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-06 Threatist record created from CVE-2026-106194
  2. 2026-10-07 CVSS score added · CISA ADP
  3. 2026-10-07 CISA SSVC decision points changed
  4. 2026-10-07 Alias added: GHSA-c8gf-v7hp-gcfp
  5. 2026-10-10 Affected versions changed · Red Hat
  6. 2026-10-10 CVSS score added · Red Hat

References

  • 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