{"id":"CVE-2026-115374","revision":"3a93d48877fb44d3aebec3d44481d85b","records":[{"revision":"3a93d48877fb44d3aebec3d44481d85b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-115374","aliases":[],"title":"Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 Unsigned Header Bypass in Presigned S3 Upload URLs","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.","state":0,"publishedAt":"2026-10-22T19:13:43.999+00:00","modifiedAt":"2026-10-22T19:13:43.999+00:00","affected":[{"ecosystem":"Vendor product","name":"incus","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"lxc\",\n                    \"product\": \"incus\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:golang/github.com/lxc/incus/v7/cmd/incusd\",\n                    \"versions\": [\n                        {\n                            \"version\": \"7.0.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"7.0.2\"\n                        },\n                        {\n                            \"version\": \"7.0.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"7.5.0\"\n                        },\n                        {\n                            \"version\": \"7.5.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","score":7.1,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","score":7.1,"severity":"HIGH"}],"references":["https://github.com/lxc/incus/security/advisories/GHSA-mmj7-8rgf-mx2h","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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-115374","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-115374","identifiers":["CVE-2026-115374"]},"retained":false,"historicalAffected":[]}],"coverage":[]}