Description
An attacker can bypass authorization checks and force a Step CA ACME or SCEP provisioner to create certificates without completing certain protocol authorization checks.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| smallstep | Step-CA | 0.28.4, v0.28.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | govulncheck-vulndb | 0.0.20251209T172047-150000.1.127.1 | SUSE-SU-2025:4395-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
| openSUSE Leap 15.6 | govulncheck-vulndb | 0.0.20251209T172047-150000.1.127.1 | SUSE-SU-2025:4395-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | step-certificates | 0.29.0-r0 | — |
| Alpine v3.23 | step-certificates | 0.29.0-r0 | — |
| Alpine v3.22 | step-certificates | 0.29.0-r0 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | caddy +2 | 2.10.2-r6 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/smallstep/certificates | < 0.29.0 | 0.29.0 | GHSA-h8cp-697h-8c8p |
Advisories 2
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- SUSE-SU-2025:4395-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Mar 23, 2026