🛡️ CVE-2026-31983 — cmc

🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-306 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A Missing Authentication vulnerability was discovered in the SSH keys synchronization endpoint. An unauthenticated attacker can send a request to the SSH keys synchronization endpoint and obtain the list of users that have uploaded their public SSH keys, their groups, and the uploaded public SSH keys.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.

Weakness class

CVE-2026-31983 is classified as CWE-306: Missing Authentication for Critical Function. A sensitive function can be reached without authenticating at all.

Affected software

CVE-2026-31983 is recorded against 2 packages.

  • cmc (fixed in 26.2.0)
  • guardian (fixed in 26.2.0)

Timeline and source

Published on 9 July 2026 and last revised on 10 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

security.nozominetworks.com

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE CWE-306
Public Exploit ✅ No
Source NVD
Published 2026-07-09
Updated 2026-08-11
Modified 2026-07-10
Fix URL N/A

Affected Packages

Software From version Fixed in
cmc — 26.2.0
guardian — 26.2.0

References

Similar Threats

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