github.com/sigstore/timestamp-authority

3 known vulnerabilities.

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Medium 5.9

CVE-2026-49835

Sigstore Timestamp Authority: OOM due to unbounded metric label cardinality

Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Prior to 2.1.0, the global wrapMetrics middleware records raw HTTP request path r.URL.Path and raw HTTP request method r.Method as Prometheus labels for latency and request count metri…

sigstore timestamp-authority github.com/sigstore/timestamp-authority/v2 golang-github-sigstore-timestamp-authority Debian Ubuntu Go

Jul 17, 2026
Medium 5.5

CVE-2026-39984

Sigstore Timestamp Authority has Improper Certificate Validation in verifier

Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Versions 2.0.5 and below contain an authorization bypass vulnerability in the VerifyTimestampResponse function. VerifyTimestampResponse correctly verifies the certificate chain signatu…

sigstore timestamp-authority github.com/sigstore/timestamp-authority/v2 golang-github-sigstore-timestamp-authority Debian Ubuntu Go

Apr 14, 2026