NN-2026:10-01
Missing authentication in SSH keys synchronization endpoint in Guardian/CMC before 26.2.0
Last update: 2026-07-07
| Advisory ID | NN-2026:10-01 |
|---|---|
| Topic | Missing authentication in SSH keys synchronization endpoint in Guardian/CMC before 26.2.0 |
| CWE Impact | CWE-306: Missing Authentication for Critical Function |
| Issue date | 2026-07-07 |
| Affects | Guardian, CMC < v26.2.0 |
| CVE Name(s) | CVE-2026-31983 |
| CVSS Details | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| CVSS Score | 6.9 (CVSS v4.0) 5.3 (CVSS v3.1) |
| CVE Risk Level | Medium (CVSS v4.0) Medium (CVSS v3.1) |
| Risk Level for Nozomi customers | Medium |
Summary
A Missing Authentication vulnerability was discovered in the SSH keys synchronization endpoint.
Impact
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.
Affected Products
Guardian, CMC < v26.2.0
Workarounds and Mitigations
Use internal firewall features to limit access to the web management interface.
Solutions
Upgrade to v26.2.0 or later.
Modification History
2026-07-07: Initial revision
Related Links
Acknowledgements
We thank the following parties for their efforts:
- Andrea Palanca of Nozomi Networks Product Security team for finding this issue during an internal investigation
Contact
Nozomi Networks Product Security team can be reached at prodsec@nozominetworks.com.More contact details on the PSIRT page.