Chrome Extensions on Mac mishandle references, enabling sandbox escape
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
Google Chrome on Mac prior to 155.0.8059.79 is affected. Incorrect reference resolution in Extensions (CWE-706) lets a remote attacker who has compromised the renderer process execute arbitrary code outside the sandbox. The attacker must supply a crafted Chrome extension, and user interaction is required. Chromium rates the issue High severity.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
Incorrect reference resolution in Extensions in Google Chrome on on Mac prior to 155.0.8059.79 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a crafted Chrome extension. (Chromium security severity: High)
Why it matters now
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Chrome | 155.0.8059.79 to before 155.0.8059.79 | 155.0.8059.79 | Patch available | CNA |
- Chrome VendorGoogle Affected 155.0.8059.79 to before 155.0.8059.79 Fixed in 155.0.8059.79 Patch available CNA
Remediation
Update Google Chrome on Mac to version 155.0.8059.79, which fixes the flaw.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA Chrome (Google) Fixed in 155.0.8059.79
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Google Chrome 155.0.8059.79
37 records Highest priority Priority MEDIUM 27 MEDIUM, 10 LOW
Other records, highest priority first
- TI-2026-73722 Use after free in Google Chrome on Android allows code executionPriority MEDIUM 43
- TI-2026-73718 Use after free in Google Chrome Network allows remote code executionPriority MEDIUM 43
- TI-2026-73709 Heap-based buffer overflow in ANGLE in Google Chrome on AndroidPriority MEDIUM 43
Vendor assessments
Timeline
- 2026-10-13 Threatist record created from CVE-2026-110156
- 2026-10-14 Alias added: GHSA-r86h-2wr7-h37v
- 2026-10-14 CVSS score added · CISA ADP
- 2026-10-14 CISA SSVC decision points changed
- 2026-10-15 Affected versions changed · Red Hat
- 2026-10-15 CVSS score added · Red Hat
- 2026-10-15 CISA SSVC decision points changed
References
More Google Chrome vulnerabilities
- 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
Sources
- CVE-2026-110156 · CVE Program
- CVE-2026-110156 · NVD
- FIRST EPSS
- GHSA-r86h-2wr7-h37v · GitHub Advisory Database · CC BY 4.0
- CVE-2026-110156 · Red Hat security data · CC BY 4.0
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