Same-account object disclosure via unsigned copy header
Published Sep 24, 2026 · Updated Sep 24, 2026
Authorization bypass in OpenStack Swift allows remote attackers with signed TempURLs to read other objects in the same account. The tempurl middleware accepts X-Copy-From on a signed PUT even though the signature covers only the method, expiry, and path, so copy middleware substitutes an unapproved source object. Exploitation requires the default tempurl-and-copy proxy pipeline, account-level TempURL keys, and usable PUT and GET TempURLs; cross-account copies remain rejected.
Summary
What happened
Authorization bypass in OpenStack Swift allows remote attackers with signed TempURLs to read other objects in the same account. The tempurl middleware accepts X-Copy-From on a signed PUT even though the signature covers only the method, expiry, and path, so copy middleware substitutes an unapproved source object. Exploitation requires the default tempurl-and-copy proxy pipeline, account-level TempURL keys, and usable PUT and GET TempURLs; cross-account copies remain rejected.
The record
- CVE
- CVE-2026-97149
- Published
- Sep 24, 2026
- Updated
- Sep 24, 2026
- Vendor
- OpenStack
- Product
- Swift
- Classifications
- T1530
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 24, 2026CVE publishedPublication date reported by the CVE source.
- Sep 24, 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=2.36.0 <2.36.4
- Affected versionversion=2.37.0 <2.37.4
- Affected versionversion=2.38.0 <2.38.2
- Affected versionversion=2.4.0 <2.35.5
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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Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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