CVE Scan for caddy:2.11.1
Docker image vulnerability scanner
45 Known Vulnerabilities in this Docker Image
| CVE ID | Severity | Package | Affected Version | Fixed Version | CVSS Score |
|---|---|---|---|---|---|
| CVE-2026-30836 | critical | certificates | <0.30.0 | 0.30.0 | 10.0 |
SummaryAn attacker can force a Step CA SCEP provisioner to create certificates without completing certain protocol authorization checks. DetailsSCEP requests carry a message type. On receipt of a SCEP request, Step CA starts processing it by parsing its contents. Message types that were considered valid, but not explicitly supported in Step CA, would result in getting parsed successfully. While processing the parsed SCEP message, authorization logic would be skipped for the non-supported message types. As a result, the request would be treated as authorized, bypassing the authorization checks normally enforced as part of the SCEP protocol and its implementation in Step CA. Authorization webhooks and regular CA policies, such as allowed names and restrictions on certificate validity periods, remain in place. MitigationsIf you are unable to upgrade to v0.30.0 or newer, the attack can be mitigated by (temporarily) disabling or removing SCEP provisioners, or restricting access to SCEP provisioners to trusted clients only. FixIn v0.30.0, additional validation was added to SCEP provisioners, so that they reject unsupported message types. AcknowledgementsThis issue was identified and reported by Prasanth Sundararajan. Embargo ListIf your organization runs Step CA in production and would like advance, embargoed notification of future security updates, visit https://u.step.sm/disclosure to request inclusion on our embargo list. Stay safe, and thank you for helping us keep the ecosystem secure. If you have urgent questions, please contact security@smallstep.com. Relevance: The relevance of this vulnerability depends on whether it affects Caddy’s core HTTP/S functionality or an optional module, as "normal usage" typically involves basic reverse proxying and static file serving. It would be critical in scenarios where an attacker can exploit the specific flaw to achieve unauthorized access, information disclosure, or a denial of service within a production environment. Without further details on the vulnerability's vector, users should assume high relevance if their configuration utilizes the specific component targeted by the CVE. (Note: Relevance analysis is automatically generated and may require verification.) Package URL(s):
More Info (NVD): | |||||
| CVE-2026-31789 | critical | openssl | <3.5.6-r0 | 3.5.6-r0 | 9.8 |
| CVE-2026-33186 | critical | grpc | <1.79.3 | 1.79.3 | 9.1 |
| CVE-2026-33810 | high | pkg:golang/stdlib@1.26.0 | >=1.26.0-0,<1.26.2 | 1.26.2 | 8.2 |
| CVE-2026-28387 | high | openssl | <3.5.6-r0 | 3.5.6-r0 | 8.1 |
| CVE-2026-30851 | high | caddy | >=2.10.0,<2.11.2 | 2.11.2 | 8.1 |
| CVE-2026-40200 | high | musl | <1.2.5-r23 | 1.2.5-r23 | 8.1 |
| CVE-2026-25679 | high | pkg:golang/stdlib@1.26.0 | >=1.26.0-0,<1.26.1 | 1.26.1 | 7.5 |
| CVE-2026-2673 | high | openssl | <3.5.6-r0 | 3.5.6-r0 | 7.5 |
| CVE-2026-27135 | high | nghttp2 | <=1.68.0-r0 | not fixed | 7.5 |
Severity Levels
Exploitation could lead to severe consequences, such as system compromise or data loss. Requires immediate attention.
Vulnerability could be exploited relatively easily and lead to significant impact. Requires prompt attention.
Exploitation is possible but might require specific conditions. Impact is moderate. Should be addressed in a timely manner.
Exploitation is difficult or impact is minimal. Address when convenient or as part of regular maintenance.
Severity is not determined, informational, or negligible. Review based on context.
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