CVE-2026-31982
HighCVSS 7.1Exploitation Probability (EPSS)
Low risk6th percentile - higher than 6% of all known CVEs
Summary
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.
Risk Assessment
The organization is exposed to phishing attacks and credential theft, as well as disruptions to SAML authentication, which can lead to loss of trust and data security breaches.
Recommendation
Immediately update the software to a version that fixes the validation of the redirection parameter in the SAML Single Sign-On functionality. Until the update is applied, temporarily disable or restrict access to the SAML endpoint.
Related vulnerabilities
- CVE-2026-84834Critical
Unauthenticated PHP Object Injection vulnerability in JobSearch versions up to 3.2.0. An attacker can inject malicious PHP objects, potentially leading to arbitrary code execution.
- CVE-2026-84814Critical
Subscriber privilege escalation vulnerability in Bricksforge versions up to 3.1.8.8, allowing a subscriber to escalate privileges.
- CVE-2026-84813Critical
Unauthenticated SQL Injection vulnerability in GeoDirectory versions up to 2.8.174. An attacker can inject SQL queries, potentially leading to unauthorized database access.
- CVE-2026-84768Critical
Unauthenticated SQL Injection vulnerability in VikAppointments Services Booking Calendar versions up to 1.2.20. An attacker can inject SQL queries, potentially leading to unauthorized database access.
- CVE-2026-84753Critical
Unauthenticated PHP Object Injection vulnerability in Mail Mint versions up to 1.31.0. An attacker can inject malicious PHP objects, potentially leading to arbitrary code execution.
- CVE-2026-84238Critical
Unauthenticated Broken Access Control vulnerability in YITH Request a Quote for WooCommerce Premium versions before 4.46.0. An attacker can access functions they should not have permission to.
- CVE-2026-85216Critical
MISP contains an authentication bypass vulnerability in its LDAP and LinOTP authentication components due to insufficient validation of user-supplied credentials. An attacker knowing a valid directory user's email address could submit an empty password, which may be accepted by an LDAP server allowing unauthenticated binds. Additionally, in the LinOTP component, empty passwords could be checked against local MISP password hashes, and LDAP-provisioned accounts could be created with empty local passwords.
- CVE-2026-85183Critical
Taipy configures its socket.io server with wildcard CORS origin and credential flag enabled, allowing any web page to establish credentialed WebSocket connections to victim applications. Attackers can open socket.io sessions from arbitrary domains and invoke state variable modifications and action callbacks without CSRF protection.
- CVE-2026-85181Critical
CAT uses Java String.hashCode as the sole integrity check for session cookies without server-side keying, allowing attackers to forge valid checksums offline. Attackers can set the x-forwarded-for header to bypass IP binding validation and create admin sessions with full configuration access.
- CVE-2026-85109Critical
A vulnerability was determined in Tenda HG10 300001138. This issue affects the function formLogin of the file /boaform/formLogin of the component Boa Web Server. Executing a manipulation of the argument Username can lead to buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.
Original NVD description (English source)
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.

