{"id":"CVE-2026-97149","published":"2026-09-24T03:16:59.133","lastModified":"2026-09-24T21:08:22.573","description":"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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-184"],"vendors":[],"products":[],"references":[{"url":"https://launchpad.net/bugs/2166876","tags":[]},{"url":"http://www.openwall.com/lists/oss-security/2026/09/24/5","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}