Google Chrome Network input validation flaw allows sandbox code execution
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- 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 prior to 156.0.8078.79 has an improper input validation flaw in its Network component (CWE-20). A remote attacker can execute arbitrary code inside the sandbox by sending crafted network traffic. Exploitation requires user interaction.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
Description from the CNA
Improper input validation in Network in Google Chrome prior to 156.0.8078.79 allowed a remote attacker to execute arbitrary code inside the sandbox via crafted network traffic. (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
Remediation
Update Google Chrome to 156.0.8078.79 or later. The sources list no fixed version for any other product.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
- Fix · CNA Chrome (Google) Fixed in 156.0.8078.79
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Google Chrome 156.0.8078.79
21 records Highest priority Priority MEDIUM 13 MEDIUM, 8 LOW
Other records, highest priority first
- TI-2026-82801 Buffer overflow in Skia in Google Chrome allows sandbox escapePriority MEDIUM 43
- TI-2026-82803 Use after free in Google Chrome GarbageCollectionPriority MEDIUM 42
- TI-2026-82810 Incorrect reference resolution in CacheStorage in Google ChromePriority MEDIUM 40
Vendor assessments
Timeline
- 2026-10-30 Threatist record created from CVE-2026-76029
- 2026-10-30 Alias added: GHSA-72w3-57x2-f2v2
- 2026-10-30 CVSS score added · CISA ADP
- 2026-10-30 CISA SSVC decision points changed
- 2026-10-30 Affected versions changed · Red Hat
- 2026-10-30 CVSS score added · Red Hat
- 2026-10-31 CISA SSVC decision points changed
- 2026-11-01 Priority changed: LOW → MEDIUM
- 2026-11-03 Title updated · CNA
- 2026-11-03 Weakness changed · CNA
- 2026-11-05 Priority changed: MEDIUM → LOW
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-2026-76029 · CVE Program
- CVE-2026-76029 · NVD
- FIRST EPSS
- GHSA-72w3-57x2-f2v2 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-76029 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences