Cross-site redirect disclosure via missing PerformanceEntry
Published Dec 22, 2022 · Updated Apr 15, 2025
Information disclosure in the Performance API in Mozilla Firefox before 103 allows remote attackers to detect cross-site redirects. Cross-origin fetches that redirect produce no PerformanceResourceTiming entry, while nonredirecting fetches do, exposing redirect state through getEntriesByName. Execution of attacker-controlled web content in the browser is required, and the observable consequence is limited to whether the requested URL redirected.
Summary
What happened
Information disclosure in the Performance API in Mozilla Firefox before 103 allows remote attackers to detect cross-site redirects. Cross-origin fetches that redirect produce no PerformanceResourceTiming entry, while nonredirecting fetches do, exposing redirect state through getEntriesByName. Execution of attacker-controlled web content in the browser is required, and the observable consequence is limited to whether the requested URL redirected.
The record
- CVE
- CVE-2022-36316
- Published
- Dec 22, 2022
- Updated
- Apr 15, 2025
- Vendor
- Mozilla
- Product
- Firefox
- Classifications
- CWE-601
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 22, 2022CVE publishedPublication date reported by the CVE source.
- Apr 15, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <103
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
- fetch_leak.html interactive proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo