Use after free in Extensions in Google Chrome prior to 151.0.7922.137 allowed an attacker who convinced a user to install a malicious extension to… (CVE-2026-19558)
A use-after-free vulnerability exists in the Extensions component of Google Chrome versions prior to 151.0.7922.137. This flaw allows an attacker who convinces a user to install a malicious extension to execute arbitrary code within a sandboxed environment. The vulnerability is identified as CVE-2026-19558 and has a high severity rating.
AI Analysis
Technical Summary
CVE-2026-19558 is a use-after-free vulnerability in the Extensions module of Google Chrome before version 151.0.7922.137. Exploitation requires user interaction, specifically convincing the user to install a crafted malicious Chrome extension. Successful exploitation can lead to arbitrary code execution inside a sandbox, potentially compromising the affected system. The vulnerability is tracked under CWE-416 and has a CVSS v3.1 base score of 7.5, indicating high severity.
Potential Impact
An attacker can execute arbitrary code inside a sandboxed environment by leveraging this vulnerability after tricking a user into installing a malicious Chrome extension. This could lead to compromise of the user's browser environment and potentially further impact depending on sandbox escape capabilities, though the vulnerability itself is contained within the sandbox.
Mitigation Recommendations
A fix is available in Google Chrome version 151.0.7922.137. Users and administrators should update to this version or later to remediate the vulnerability. No additional mitigation steps are indicated beyond applying the official update.
Use after free in Extensions in Google Chrome prior to 151.0.7922.137 allowed an attacker who convinced a user to install a malicious extension to… (CVE-2026-19558)
Description
A use-after-free vulnerability exists in the Extensions component of Google Chrome versions prior to 151.0.7922.137. This flaw allows an attacker who convinces a user to install a malicious extension to execute arbitrary code within a sandboxed environment. The vulnerability is identified as CVE-2026-19558 and has a high severity rating.
CVSS v3.1
Score 7.5high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-19558 is a use-after-free vulnerability in the Extensions module of Google Chrome before version 151.0.7922.137. Exploitation requires user interaction, specifically convincing the user to install a crafted malicious Chrome extension. Successful exploitation can lead to arbitrary code execution inside a sandbox, potentially compromising the affected system. The vulnerability is tracked under CWE-416 and has a CVSS v3.1 base score of 7.5, indicating high severity.
Potential Impact
An attacker can execute arbitrary code inside a sandboxed environment by leveraging this vulnerability after tricking a user into installing a malicious Chrome extension. This could lead to compromise of the user's browser environment and potentially further impact depending on sandbox escape capabilities, though the vulnerability itself is contained within the sandbox.
Mitigation Recommendations
A fix is available in Google Chrome version 151.0.7922.137. Users and administrators should update to this version or later to remediate the vulnerability. No additional mitigation steps are indicated beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-5qcx-j3rr-hjw9
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-19558"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a7c9b28bf8831d539cdaee6
Added to database: 08/12/2026, 16:11:20 UTC
Last enriched: 08/12/2026, 16:19:23 UTC
Last updated: 08/13/2026, 02:40:59 UTC
Views: 3
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