CVE-2026-40097
unknown
CVSS v3
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CVSS v4 NEW
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VIR risk
—
Description
Step CA affected by an index out of bounds panic in TPM attestation EKU validation
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/smallstep/certificates | >=0.24.0,<0.30.0 | 0.30.0 |
References
- https://github.com/smallstep/certificates/security/advisories/GHSA-9qq8-cgcv-qmc9
- https://nvd.nist.gov/vuln/detail/CVE-2026-40097
- https://github.com/smallstep/certificates/pull/2569
- https://github.com/smallstep/certificates/commit/ffd31ac0a87e03b0224cb8363094bfe602242888
- https://github.com/smallstep/certificates
- https://github.com/smallstep/certificates/releases/tag/v0.30.0
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.