CVE-2026-31982
Open Redirect in SAML Single Sign-On in Guardian/CMC before 26.2.0
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
0th
An Open Redirect vulnerability was discovered in the SAML Single Sign-On functionality due to insufficient validation of a user-controlled redirection parameter. An unauthenticated attacker can craft a request to the SAML sign-in endpoint and poison the cached SAML redirection for other users who subsequently initiate SAML Single Sign-On, enabling phishing and credential-theft attacks, as well as disrupting SAML authentication for all affected users.
| CWE | CWE-601 |
| Vendor | nozomi networks |
| Product | guardian |
| Published | Jul 9, 2026 |
| Last Updated | Jul 9, 2026 |
Stay Ahead of the Next One
Get instant alerts for nozomi networks guardian
Be the first to know when new high vulnerabilities affecting nozomi networks guardian are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low
Affected Versions
Nozomi Networks / Guardian
0 < 26.2.0
Nozomi Networks / CMC
0 < 26.2.0
References
Credits
This issue was found by Andrea Palanca of Nozomi Networks Product Security team during an internal investigation.