CVE-2026-30836 is a critical vulnerability affecting Step CA versions 0.30.0-rc6 and earlier, allowing unauthenticated certificate issuance through the SCEP UpdateReq. Rated 10.0 CRITICAL, this flaw has a network attack vector and low attack complexity, enabling an attacker to achieve high confidentiality and integrity impact by issuing unauthorized certificates. While there is no evidence of active exploitation, public exploit code, or significant community discussion, the severe nature of this vulnerability necessitates immediate patching. Organizations using affected versions should upgrade to 0.30.0 to mitigate this risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.30.0CPE matchmatch criteria | cpe:2.3:a:smallstep:step-ca:*:*:*:*:*:go:*:* | ||
0.30.0CPE matchmatch criteria | cpe:2.3:a:smallstep:step-ca:0.30.0:rc1:*:*:*:go:*:* | ||
0.30.0CPE matchmatch criteria | cpe:2.3:a:smallstep:step-ca:0.30.0:rc2:*:*:*:go:*:* | ||
0.30.0CPE matchmatch criteria | cpe:2.3:a:smallstep:step-ca:0.30.0:rc3:*:*:*:go:*:* | ||
0.30.0CPE matchmatch criteria | cpe:2.3:a:smallstep:step-ca:0.30.0:rc4:*:*:*:go:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.