Medium severity5.0OSV Advisory· Published Dec 3, 2025· Updated Apr 15, 2026
CVE-2025-66406
CVE-2025-66406
Description
Step CA is an online certificate authority for secure, automated certificate management for DevOps. Prior to 0.29.0, there is an improper authorization check for SSH certificate revocation. This affects deployments configured with the SSHPOP provisioner. This vulnerability is fixed in 0.29.0.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/smallstep/certificatesGo | < 0.29.0 | 0.29.0 |
Affected products
11- Range: v0.0.1-rc.2, v0.10.0, v0.11.0, …
- osv-coords10 versionspkg:apk/chainguard/caddypkg:apk/chainguard/caddy-fipspkg:apk/chainguard/caddy-manpkg:apk/chainguard/caddy-srcpkg:apk/wolfi/caddypkg:apk/wolfi/caddy-manpkg:apk/wolfi/caddy-srcpkg:golang/github.com/smallstep/certificatespkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2015.6pkg:rpm/suse/govulncheck-vulndb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP6
< 2.10.2-r6+ 9 more
- (no CPE)range: < 2.10.2-r6
- (no CPE)range: < 2.10.2-r6
- (no CPE)range: < 2.10.2-r6
- (no CPE)range: < 2.10.2-r6
- (no CPE)range: < 2.10.2-r6
- (no CPE)range: < 2.10.2-r6
- (no CPE)range: < 2.10.2-r6
- (no CPE)range: < 0.29.0
- (no CPE)range: < 0.0.20251209T172047-150000.1.127.1
- (no CPE)range: < 0.0.20251209T172047-150000.1.127.1
Patches
Vulnerability mechanics
References
3News mentions
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