sigstore fulcio
3 published vulnerabilities name this product.
As the CNAs write it in their CVE records (vendor and product); the versions are theirs.
| CVE | Vulnerable versions | Title | Severity | Published | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| CVE-2026-49478 | < 1.8.6 | Fulcio has OIDC Discovery Redirect Following Allows SSRF and JWKS Substitution for Meta-Issuer Paths, with Kubernetes Service-Account Tok… | HIGH 8.7 | 0.3 % | ||
| CVE-2026-22772 | < 1.8.5 | Fulcio vulnerable to Server-Side Request Forgery (SSRF) via MetaIssuer Regex Bypass | MEDIUM 5.8 | 0.2 % | ||
| CVE-2025-66506 | < 1.8.3 | Fulcio allocates excessive memory during token parsing | HIGH 7.5 | 0.2 % |