{"cve":"CVE-2026-48758","nvd":{"published":"2026-07-14T21:17:01.113","modified":"2026-10-24T21:10:00.130","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"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},"cwes":["CWE-347"],"references":["https://github.com/sigstore/sigstore-js/commit/b5aa4f1f8d2db0a9dfa6430fb114d9c2f1c304f7","https://github.com/sigstore/sigstore-js/pull/1657","https://github.com/sigstore/sigstore-js/releases/tag/%40sigstore%2Fcore%403.2.1","https://github.com/sigstore/sigstore-js/security/advisories/GHSA-jfc7-64v2-mr8c","https://github.com/sigstore/sigstore-js/security/advisories/GHSA-jfc7-64v2-mr8c"],"products":[],"source":"nvd","synced_at":"2026-10-25T17:50:06.907763985+00:00"},"epss":{"cve":"CVE-2026-48758","score":0.00239,"percentile":0.14774,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-jfc7-64v2-mr8c","url":"https://osv.dev/vulnerability/GHSA-jfc7-64v2-mr8c","summary":"@sigstore/core has DSSE payloadType type-binding failure","modified":"2026-09-10T03:51:08.786207433Z","packages":[{"ecosystem":"npm","name":"@sigstore/core","purl":"pkg:npm/%40sigstore/core","ranges":["<3.2.1"],"fixed":["3.2.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}