Local file disclosure via insufficient extension validation
Published Jul 28, 2023 · Updated Feb 13, 2025
Insufficient input validation in Google Chrome Extensions before 90.0.4430.72 allows attackers to access local files through a crafted extension. Google has not published the specific Extensions code locus or the incorrect operation performed on extension-controlled input. Exploitation requires a user to install the malicious extension, after which it can read local files but has no reported ability to modify them or disrupt the browser.
Summary
What happened
Insufficient input validation in Google Chrome Extensions before 90.0.4430.72 allows attackers to access local files through a crafted extension. Google has not published the specific Extensions code locus or the incorrect operation performed on extension-controlled input. Exploitation requires a user to install the malicious extension, after which it can read local files but has no reported ability to modify them or disrupt the browser.
The record
- CVE
- CVE-2021-4323
- Published
- Jul 28, 2023
- Updated
- Feb 13, 2025
- Vendor
- Google Cloud
- Product
- Google Chrome
- Classifications
- T1204.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 28, 2023CVE publishedPublication date reported by the CVE source.
- Feb 13, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=90.0.4430.72 <90.0.4430.72
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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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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