sigstore vulnerabilities (CVE)

CVE records published for sigstore, newest first. Follow to get an email when a new one appears.

25 results
6.5Medium
CVE-2026-48816

sigstore-js: Insufficient Verification of Data Authenticity

sigstore sigstore-js

sigstore-js provides JavaScript libraries for interacting with Sigstore services. Prior to 3.1.1, @sigstore/verify derives a transparency-log timestamp from tlogEntries[].integratedTime for bundle v0.2 inclusionProof-only entries even though the inclusion pro…

5.4Medium
CVE-2026-48758

sigstore-js: DSSE payloadType type-binding failure

sigstore sigstore-js

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 sign…

7.5High
CVE-2025-66506

Fulcio allocates excessive memory during token parsing

sigstore fulcio

Fulcio is a free-to-use certificate authority for issuing code signing certificates for an OpenID Connect (OIDC) identity. Prior to 1.8.3, function identity.extractIssuerURL splits (via a call to strings.Split) its argument (which is untrusted data) on period…