Sensitive-data disclosure via lost request world
Published Sep 9, 2026 · Updated Sep 9, 2026
Incorrect authorization in Google Chrome Loader before 153.0.8010.36 allows remote attackers to disclose sensitive data via a crafted HTML page. ResourceFetcher::RevalidateStaleResource constructs stale-while-revalidate follow-up requests with a null world instead of preserving the originating world, so downstream CSP and Resource Timing checks use the wrong authorization context. Exploitation requires a user to load attacker-controlled HTML; the reported consequence is confidentiality loss without data modification or service interruption.
Summary
What happened
Incorrect authorization in Google Chrome Loader before 153.0.8010.36 allows remote attackers to disclose sensitive data via a crafted HTML page. ResourceFetcher::RevalidateStaleResource constructs stale-while-revalidate follow-up requests with a null world instead of preserving the originating world, so downstream CSP and Resource Timing checks use the wrong authorization context. Exploitation requires a user to load attacker-controlled HTML; the reported consequence is confidentiality loss without data modification or service interruption.
The record
- CVE
- CVE-2026-87476
- Published
- Sep 9, 2026
- Updated
- Sep 9, 2026
- Vendor
- Google Cloud
- Product
- Google Chrome
- Classifications
- CWE-863, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 9, 2026CVE publishedPublication date reported by the CVE source.
- Sep 9, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=153.0.8010.36 <153.0.8010.36
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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