NN-2026:18-01
Cross-site request forgery in the Guardian/CMC login before 26.3.0
Last update: 2026-09-08
| Advisory ID | NN-2026:18-01 |
|---|---|
| Topic | Cross-site request forgery in the Guardian/CMC login before 26.3.0 |
| CWE Impact | CWE-352: Cross-Site Request Forgery (CSRF) |
| Issue date | 2026-09-08 |
| Affects | Guardian, CMC < v26.3.0 |
| CVE Name(s) | CVE-2026-33920 |
| CVSS Details | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N |
| CVSS Score | 5.1 (CVSS v4.0) 3.5 (CVSS v3.1) |
| CVE Risk Level | Medium (CVSS v4.0) Low (CVSS v3.1) |
| Risk Level for Nozomi customers | Medium |
Summary
A cross-site request forgery vulnerability was discovered in the login functionality (both standard and SAML) due to missing validation of the anti-CSRF token.
Impact
An attacker with a valid account can trick a victim into unknowingly authenticating with the attacker's credentials. Any operation performed by the victim in this state is attributed to the attacker's account, compromising the integrity of the audit trail.
Affected Products
Guardian, CMC < v26.3.0
Workarounds and Mitigations
Users should always pay attention to phishing emails and untrusted links.
Solutions
Upgrade to v26.3.0 or later.
Modification History
2026-09-08: Initial revision
Related Links
Acknowledgements
We thank the following parties for their efforts:
- one of our customers for finding this issue during a VAPT testing session
Contact
Nozomi Networks Product Security team can be reached at prodsec@nozominetworks.com.More contact details on the PSIRT page.