{"id":"CVE-2026-48758","revision":"f1996f38b4d84eaf868e8d807fe41c49","records":[{"revision":"f1996f38b4d84eaf868e8d807fe41c49","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-48758","aliases":[],"title":"sigstore-js: DSSE payloadType type-binding failure","description":"sigstore-js provides JavaScript libraries for interacting with Sigstore services. Prior to 3.2.1, the preAuthEncoding function in @sigstore/core uses Node.js ascii encoding when converting the PAE string to bytes, allowing payloadType to be mutated after signing without invalidating the signature and breaking the type-binding guarantee that DSSE is designed to provide. This issue is fixed in version 3.2.1.","state":0,"publishedAt":"2026-07-14T20:36:28.641+00:00","modifiedAt":"2026-07-15T12:54:55.445+00:00","affected":[{"ecosystem":"Vendor product","name":"sigstore-js","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"sigstore\",\n                    \"product\": \"sigstore-js\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 3.2.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","score":5.4,"severity":"MEDIUM"}],"references":["https://github.com/sigstore/sigstore-js/security/advisories/GHSA-jfc7-64v2-mr8c","https://github.com/sigstore/sigstore-js/pull/1657","https://github.com/sigstore/sigstore-js/commit/b5aa4f1f8d2db0a9dfa6430fb114d9c2f1c304f7","https://github.com/sigstore/sigstore-js/releases/tag/%40sigstore%2Fcore%403.2.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-48758","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-48758","identifiers":["CVE-2026-48758"]},"retained":false,"historicalAffected":[]}],"coverage":[]}