# github.com/sigstore/fulcio (Go) vulnerabilities

3 known vulnerabilities (2 high, 1 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://pkg.go.dev/github.com/sigstore/fulcio

## Advisories (3)

### [CVE-2026-49478](https://cve.now/CVE-2026-49478): Fulcio has OIDC Discovery Redirect Following Allows SSRF and JWKS Substitution for Meta-Issuer Paths, with Kubernetes Service-Account…

- Severity: High 8.7
- Published: Aug 13, 2026
- Affected: fixed in 1.8.6.

### [CVE-2026-22772](https://cve.now/CVE-2026-22772): Fulcio vulnerable to Server-Side Request Forgery (SSRF) via MetaIssuer Regex Bypass

- Severity: Medium 5.8
- Published: Jan 12, 2026
- Affected: fixed in 1.8.5.

### [CVE-2025-66506](https://cve.now/CVE-2025-66506): Fulcio allocates excessive memory during token parsing

- Severity: High 7.5
- Published: Dec 4, 2025
- Affected: fixed in 1.8.3.

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