Heap corruption via BrowserTag use-after-free
Published Jun 30, 2026 · Updated Jun 30, 2026
Use after free in BrowserTag in Google Chrome before 150.0.7871.47 allows attackers to corrupt heap memory through a crafted extension. Google identifies BrowserTag as the affected locus but has not disclosed which object is freed while a usable reference remains or which operation later dereferences it. Exploitation requires a user to install a malicious extension; the published record establishes heap corruption but does not specify code execution or another end result.
Summary
What happened
Use after free in BrowserTag in Google Chrome before 150.0.7871.47 allows attackers to corrupt heap memory through a crafted extension. Google identifies BrowserTag as the affected locus but has not disclosed which object is freed while a usable reference remains or which operation later dereferences it. Exploitation requires a user to install a malicious extension; the published record establishes heap corruption but does not specify code execution or another end result.
The record
- CVE
- CVE-2026-14040
- Published
- Jun 30, 2026
- Updated
- Jun 30, 2026
- Vendor
- Go standard library
- Product
- Google Chrome
- Classifications
- CWE-416, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 30, 2026CVE publishedPublication date reported by the CVE source.
- Jun 30, 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 versionversion=150.0.7871.47 <150.0.7871.47
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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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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