CVE-2026-48758 (GCVE-0-2026-48758)

Vulnerability from cvelistv5 – Published: 2026-07-14 20:36 – Updated: 2026-07-15 12:54
VLAI
Title
sigstore-js: DSSE payloadType type-binding failure
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.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 12:54 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version CPE status
sigstore sigstore-js Affected: < 3.2.1
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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