{"id":"CVE-2026-115374","published":"2026-10-22T19:17:43.953","lastModified":"2026-10-23T17:06:36.030","description":"Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 contains a signature verification flaw in its built-in S3 server that allows presigned URL holders to inject unsigned x-amz-* headers. Attackers can add an unsigned X-Amz-Copy-Source header to a presigned upload URL to copy other bucket objects onto the granted key, disclosing their contents and ETags.","cvssScore":7.1,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","cwes":["CWE-347"],"vendors":[],"products":[],"references":[{"url":"https://github.com/lxc/incus/security/advisories/GHSA-mmj7-8rgf-mx2h","tags":[]},{"url":"https://www.vulncheck.com/advisories/incus-7.0.0-before-7.0.2-and-7.1.0-before-7.5.0-unsigned-header-bypass-in-presigned-s3-upload-urls","tags":[]}],"exploitRefs":[{"url":"https://github.com/lxc/incus/security/advisories/GHSA-mmj7-8rgf-mx2h","tags":[]}],"hasPoc":true,"ai":null}