CVE-2026-48758 (GCVE-0-2026-48758)
Vulnerability from cvelistv5
Published
2026-07-14 20:36
Modified
2026-07-15 12:54
Severity ?
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Summary
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
Impacted products
Vendor Product Version
sigstore sigstore-js Version: < 3.2.1
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