github.com/sigstore/fulcio

3 known vulnerabilities.

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Medium 5.8

CVE-2026-22772

Fulcio vulnerable to Server-Side Request Forgery (SSRF) via MetaIssuer Regex Bypass

Fulcio is a certificate authority for issuing code signing certificates for an OpenID Connect (OIDC) identity. Prior to 1.8.5, Fulcio's metaRegex() function uses unanchored regex, allowing attackers to bypass MetaIssuer URL validation and trigger SSRF to arbi…

sigstore fulcio golang-github-sigstore-fulcio github.com/sigstore/fulcio Debian Ubuntu Go

Jan 12, 2026