Credential disclosure via cross-port redirect header reuse
Published Jun 9, 2022 · Updated Apr 23, 2025
Credential exposure in Sparkle Motion Mechanize before 2.8.5 allows remote attackers to obtain Authorization headers via redirects. Mechanize::HTTP::Agent#response_redirect clears credential headers only when the redirect host changes, so it forwards Authorization unchanged when the host matches but the port differs. Exploitation requires a credential-bearing request and a redirect to an attacker-controlled service on another port of the same host, exposing credentials without modifying data.
Summary
What happened
Credential exposure in Sparkle Motion Mechanize before 2.8.5 allows remote attackers to obtain Authorization headers via redirects. Mechanize::HTTP::Agent#response_redirect clears credential headers only when the redirect host changes, so it forwards Authorization unchanged when the host matches but the port differs. Exploitation requires a credential-bearing request and a redirect to an attacker-controlled service on another port of the same host, exposing credentials without modifying data.
The record
- CVE
- CVE-2022-31033
- Published
- Jun 9, 2022
- Updated
- Apr 23, 2025
- Vendor
- Sparkle Motion
- Product
- Mechanize
- Classifications
- CWE-200, CWE-522
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 9, 2022CVE publishedPublication date reported by the CVE source.
- Apr 23, 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?
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- Affected versionversion=< 2.8.5
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What is affected?
Published CVSS scores
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Attacks
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Weakness, pattern, technique
Public exploit references
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Technologies
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Your stack
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