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Vulnerabilities CVE-2026-31982

CVE-2026-31982

Medium
Open
TLP:CLEAR

Open Redirect in SAML Single Sign-On in Guardian/CMC before 26.2.0

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Description

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.

Details

CVSS Score
5.3
EPSS Score
0.17%

6.3th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L
Confidence
90%
Published
Jul 9, 2026
Last Modified
Aug 11, 2026
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