CVE-2026-48758mediumCWE-347

sigstore-js: DSSE payloadType type-binding failure

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 5.4epss 0.2%

probabilidad de explotación

0.2%top 90% de las CVE

explotación observada

noninguna fuente lo reporta

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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Productos afectados

sigstore · sigstore-js

Referencias

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