In OpenStack Swift before 2.38.2, the tempurl middleware does not reject the X-Copy-From header on PUT requests. A TempURL signature only covers the method, expiry, and path, and thus the list of disallowed headers is the only defense against a signed PUT request changing what the request does. An attacker holding a PUT TempURL for a single object can add an X-Copy-From header naming any object in the same account; the copy middleware copies that object to the destination, and the attacker then reads the victim's data back with a GET TempURL for the destination object. Copies across account boundaries are rejected. Only deployments using the shipped default proxy pipeline (tempurl and copy middleware) with account-level TempURL keys are affected.
CVSS
No CVSS.
References
Configurations
No configuration.
History
24 Sep 2026, 19:17
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24 Sep 2026, 03:16
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Information
Published : 2026-09-24 03:16
Updated : 2026-10-06 18:16
NVD link : CVE-2026-97149
Mitre link : CVE-2026-97149
CVE.ORG link : CVE-2026-97149
JSON object : View
Products Affected
No product.
CWE
CWE-184
Incomplete List of Disallowed Inputs
