Steve doesn’t verify a server’s certificate and is susceptible to man-in-the-middle (MitM) attacks

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Summary

CVECVE-2023-32198
StatePUBLISHED
Assignersuse
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-15 09:17:13 UTC
Updated2026-10-16 19:55:59 UTC
DescriptionA vulnerability has been identified in Steve where by default it was using an insecure option that did not validate the certificate presented by the remote server while performing a TLS connection. This could allow the execution of a man-in-the-middle (MitM) attack against services using Steve.

Risk And Classification

Primary CVSS: v3.1 8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS: 0.003290000 probability, percentile 0.243960000 (date 2026-10-16)

Problem Types: CWE-295 | CWE-295 CWE-295: Improper certificate validation

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8HIGHCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
3.1CNACVSS8HIGHCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA SUSE Steve affected 0.2.0 0.2.1 semver Not specified
CNA SUSE Steve affected 0.3.0 0.3.3 semver Not specified
CNA SUSE Steve affected 0.4.0 0.4.4 semver Not specified
CNA SUSE Steve affected 0.5.0 0.5.13 semver Not specified

References

ReferenceSourceLinkTags
github.com/rancher/steve/security/advisories/GHSA-95fc-g4gj-mqmx [email protected] github.com
bugzilla.suse.com/show_bug.cgi [email protected] bugzilla.suse.com
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