Site-isolation bypass via uninitialized ANGLE value
Published May 28, 2026 · Updated May 28, 2026
Uninitialized use in Google Chrome's ANGLE before 148.0.7778.216 lets remote attackers with renderer control bypass site isolation via HTML. The published record identifies uninitialized use in ANGLE but does not disclose the variable, function, or operation that consumes it. Exploitation requires a previously compromised renderer and a crafted page; the reported outcome is a site-isolation bypass, not a standalone sandbox escape.
Summary
What happened
Uninitialized use in Google Chrome's ANGLE before 148.0.7778.216 lets remote attackers with renderer control bypass site isolation via HTML. The published record identifies uninitialized use in ANGLE but does not disclose the variable, function, or operation that consumes it. Exploitation requires a previously compromised renderer and a crafted page; the reported outcome is a site-isolation bypass, not a standalone sandbox escape.
The record
- CVE
- CVE-2026-9942
- Published
- May 28, 2026
- Updated
- May 28, 2026
- Vendor
- WebM Project
- Product
- Chrome
- Classifications
- CWE-457
- Attack vector
- network
- Privileges
- Unavailable
Timeline
How it unfolded
- May 28, 2026CVE publishedPublication date reported by the CVE source.
- May 28, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected version<148.0.7778.216
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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