Observable discrepancy in Chrome Animation exposes cross-origin data
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Information disclosure
- 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-203.
Summary
Google Chrome versions prior to 156.0.8078.73 contain an observable discrepancy in Animation (CWE-203). A remote attacker can obtain cross-origin data via a crafted HTML page that a user visits.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
Description from the CNA
Observable discrepancy in Animation in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to obtain cross-origin data 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
- 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 version 156.0.8078.73 or later.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
- Fix · CNA Chrome (Google) Fixed in 156.0.8078.73
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Google Chrome 156.0.8078.73
52 records Highest priority Priority MEDIUM 43 MEDIUM, 9 LOW
Other records, highest priority first
- TI-2026-81628 Use after free in Google Chrome Command allows sandbox code executionPriority MEDIUM 43
- TI-2026-81615 Use after free in Google Chrome Editing allows code executionPriority MEDIUM 43
- TI-2026-81605 Use after free in Compositing in Google Chrome enables code executionPriority MEDIUM 43
Vendor assessments
Timeline
- 2026-10-27 Threatist record created from CVE-2026-118338
- 2026-10-28 Alias added: GHSA-77gh-q2wq-jmhc
- 2026-10-28 CVSS score added · CISA ADP
- 2026-10-28 CISA SSVC decision points changed
- 2026-10-28 CISA SSVC decision points changed
- 2026-10-29 CISA SSVC decision points changed
- 2026-10-30 Priority changed: LOW → MEDIUM
- 2026-10-30 Affected versions changed · Red Hat
- 2026-10-30 CVSS score added · Red Hat
- 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-2026-118338 · CVE Program
- CVE-2026-118338 · NVD
- FIRST EPSS
- GHSA-77gh-q2wq-jmhc · GitHub Advisory Database · CC BY 4.0
- CVE-2026-118338 · 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