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CVE-2026-48758

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-48758

Severity

5.4

Medium

CVSS V3

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Summary

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.

References

Affected packages

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