Google Chrome on iOS flaw lets crafted HTML bypass web origin policy
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-693.
Summary
Google Chrome on iOS prior to 155.0.8059.39 has a protection mechanism failure (CWE-693) in its Mobile component. A remote attacker can bypass the web origin policy, but the victim must open a crafted HTML page. The flaw can affect the integrity of data.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
Protection mechanism failure in Mobile in Google Chrome on on iOS prior to 155.0.8059.39 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)
Why it matters now
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Chrome | 155.0.8059.39 to before 155.0.8059.39 | 155.0.8059.39 | Patch available | CNA |
- Chrome VendorGoogle Affected 155.0.8059.39 to before 155.0.8059.39 Fixed in 155.0.8059.39 Patch available CNA
Remediation
Update Google Chrome on iOS to 155.0.8059.39 or later.
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
Timeline
- 2026-10-06 Threatist record created from CVE-2026-106408
- 2026-10-07 Alias added: GHSA-56p5-jcw5-j84p
- 2026-10-07 Affected versions changed · Red Hat
- 2026-10-07 CVSS score added · Red Hat
- 2026-10-08 CVSS score added · CISA ADP
- 2026-10-08 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-2026-106408 · CVE Program
- CVE-2026-106408 · NVD
- FIRST EPSS
- GHSA-56p5-jcw5-j84p · GitHub Advisory Database · CC BY 4.0
- CVE-2026-106408 · 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