VulnerabilityModified

CVE-2026-31983

A Missing Authentication vulnerability was discovered in the SSH keys synchronization endpoint.

MEDIUM 6.9EPSS 0.41%

Does this matter?

Lower severity and a low EPSS score (0.41%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 4.0: 6.9 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.41% probability · 35th percentile
CISA KEV: Not listed
Weakness: CWE-306
Affected: nozominetworks/cmc · nozominetworks/guardian
Source: prodsec@nozominetworks.com

References

https://security.nozominetworks.com/NN-2026:10-01Mitigation, Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-827968.html

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.