CVE-2026-31983 Missing authentication in SSH keys synchronization endpoint in Guardian/CMC before 26.2.0

What is CVE-2026-31983?

CVE-2026-31983 is a medium-severity missing authorization vulnerability in Nozomi Networks CMC, published on 9 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-306

Which versions are affected by CVE-2026-31983?

It affects 2 products.

Products include Nozominetworks Cmc, Nozominetworks Guardian.

How do I fix CVE-2026-31983?

No fix has been published for CVE-2026-31983 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-31983 being exploited?

There is no known exploitation of CVE-2026-31983 in the wild and no public exploit code.

Other vulnerabilities in Nozomi Networks CMC

• CVE-2023-29245 SQL Injection on IDS parsing of malformed asset fields in Guardian/CMC >= 22.6.0 before 22.6.3 and 23.1.0 Critical 9.2
• CVE-2026-31984 DoS through oversized audit log entries in Guardian/CMC before 26.2.0 High 8.7
• CVE-2023-2567 Authenticated SQL Injection on Query functionality in Guardian/CMC before 22.6.3 and 23.1.0 High 8.7
• CVE-2023-22378 Authenticated Blind SQL Injection on sorting in Guardian/CMC before 22.6.2 High 8.7
• CVE-2023-23574 Authenticated Blind SQL Injection on alerts count in Guardian/CMC before 22.6.2 High 8.7

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-jmhq-wjwf-9x96.