golang-github-sigstore-fulcio: Fulcio is a certificate authority for issuing code signing certificates for an OpenID Connect (OIDC) identity
CVE-2026-22772 is fixed in 6 products on 1 platform, first by DEBIAN-CVE-2026-22772, released January 12, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| cosign · opensuse-leap 15.6 | 3.0.5-150400.3.35.1 | SUSE-SU-2026:0777-1 | Mar 3, 2026 |
| cosign · opensuse-leap 16.0 | 3.0.5-160000.1.1 | OPENSUSE-SU-2026:20386-1 | Mar 18, 2026 |
| cosign · sles 15.7 | 3.0.5-150400.3.35.1 | SUSE-SU-2026:0777-1 | Mar 3, 2026 |
| cosign · sles 16.0 | 3.0.5-160000.1.1 | SUSE-SU-2026:20904-1 | Mar 18, 2026 |
| golang-github-sigstore-fulcio · Debian 14 | 1.8.5-1 | DEBIAN-CVE-2026-22772 | Jan 12, 2026 |
| govulncheck-vulndb · opensuse-leap 15.6 | 0.0.20260123T022811-150000.1.140.1 | SUSE-SU-2026:0292-1 | Jan 26, 2026 |
| govulncheck-vulndb · opensuse-leap 16.0 | 0.0.20260723T184607-160000.1.1 | OPENSUSE-SU-2026:21483-1 | Jul 30, 2026 |
| hauler · opensuse-leap 16.0 | 1.4.1-bp160.1.1 | OPENSUSE-RU-2026:20161-1 | Jan 27, 2026 |
| runfinch-finch · amzn 2023 | 1.15.1-1.amzn2023.0.1 | ALAS2023-2026-1507 | Mar 30, 2026 |
| vexctl · opensuse-leap 15.6 | 0.4.1+git78.f951e3a-150000.1.11.1 | SUSE-SU-2026:0592-1 | Feb 20, 2026 |
| vexctl · opensuse-leap 16.0 | 0.4.4+git20.5d61136-160000.1.1 | OPENSUSE-SU-2026:21481-1 | Jul 30, 2026 |
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