VDB
DEBIAN-CVE-2026-22772
DEBIAN-CVE-2026-22772
PUBLISHED
CVSS 5.300000190734863 MEDIUM
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 arbitrary internal services. Since the SSRF only can trigger GET requests, the request cannot mutate state. The response from the GET request is not returned to the caller so data exfiltration is not possible. A malicious actor could attempt to probe an internal network through Blind SSRF. This vulnerability is fixed in 1.8.5.
Risk Scores
CVSS 3.1
5.300000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | golang-github-sigstore-fulcio | 0, 1.7.1-1, 1.8.5-1 |
| Debian:14 | golang-github-sigstore-fulcio | 0, 1.6.5-1, 1.7.1-1 |
Exploit Intelligence
- GO-2026-4311.json (github-poc)
Timeline
- Jan 12, 2026 CVE Published
- Apr 28, 2026 CVE Updated