{"id":"CVE-2026-97149","state":"PUBLISHED","title":"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 t","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.","publishedAt":"2026-09-24T02:25:49.093Z","updatedAt":"2026-10-06T17:42:19.236Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","source":"mitre"},"assigner":"mitre","products":["OpenStack Swift"],"affected":[{"vendor":"OpenStack","product":"Swift","defaultStatus":"unaffected","versions":[{"version":"2.4.0","status":"affected","lessThan":"2.35.5","versionType":"semver"},{"version":"2.36.0","status":"affected","lessThan":"2.36.4","versionType":"semver"},{"version":"2.37.0","status":"affected","lessThan":"2.37.4","versionType":"semver"},{"version":"2.38.0","status":"affected","lessThan":"2.38.2","versionType":"semver"}],"repo":"https://opendev.org/openstack/swift"}],"references":["https://launchpad.net/bugs/2166876","http://www.openwall.com/lists/oss-security/2026/09/24/5"],"weaknesses":["CWE-184"],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/97xxx/CVE-2026-97149.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-97149","state":"PUBLISHED","datePublished":"2026-09-24T02:25:49.093Z","dateUpdated":"2026-10-06T17:42:19.236Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2026-09-24T02:25:48.652Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"OpenStack","product":"Swift","defaultStatus":"unaffected","versions":[{"version":"2.4.0","status":"affected","lessThan":"2.35.5","versionType":"semver"},{"version":"2.36.0","status":"affected","lessThan":"2.36.4","versionType":"semver"},{"version":"2.37.0","status":"affected","lessThan":"2.37.4","versionType":"semver"},{"version":"2.38.0","status":"affected","lessThan":"2.38.2","versionType":"semver"}],"repo":"https://opendev.org/openstack/swift"}],"references":[{"url":"https://launchpad.net/bugs/2166876","tags":["issue-tracking"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-184","description":"CWE-184 Incomplete List of Disallowed Inputs","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2026-09-24T02:25:49.093Z"},"x_generator":{"engine":"CVE-Request-form 0.0.1"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:*","versionStartIncluding":"2.4.0","versionEndExcluding":"2.35.5"},{"vulnerable":true,"criteria":"cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:*","versionStartIncluding":"2.36.0","versionEndExcluding":"2.36.4"},{"vulnerable":true,"criteria":"cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:*","versionStartIncluding":"2.37.0","versionEndExcluding":"2.37.4"},{"vulnerable":true,"criteria":"cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:*","versionStartIncluding":"2.38.0","versionEndExcluding":"2.38.2"}]}]}]},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/09/24/5"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-09-24T18:09:33.737Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-06T15:53:29.868605Z","id":"CVE-2026-97149","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-06T17:42:19.236Z"}}]}}}