UBUNTU-CVE-2026-49284

SimpleSAMLphp versions before 1.18.6 contain an information disclosure...

Linux Distros Unpatched Vulnerability : CVE-2026-49284

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - SimpleSAMLphp versions before 1.18.6 contain an information disclosure vulnerability. Prior to 2.4.7 and 2.5.2, SimpleSAMLphp's SAML SP ACS path does not enforc...

DEBIAN-CVE-2026-49284

SimpleSAMLphp versions before 1.18.6 contain an information disclosure vulnerability. Prior to 2.4.7 and 2.5.2, SimpleSAMLphp's SAML SP ACS path does not enforce the IdP selected for an SP-initiated login when unsigned Response/InResponseTo is combined with a signed assertion lacking...

CVE-2026-49284

SimpleSAMLphp versions before 1.18.6 contain an information disclosure vulnerability. Prior to 2.4.7 and 2.5.2, SimpleSAMLphp's SAML SP ACS path does not enforce the IdP selected for an SP-initiated login when unsigned Response/InResponseTo is combined with a signed assertion lacking...

CVE-2026-49284

The CVE affects SimpleSAMLphp SP: the ACS path permits a response from an unexpected IdP when an unsigned Response/InResponseTo combines with a signed assertion lacking SubjectConfirmationData/InResponseTo. A response from IdP B can be bound to SP state created for IdP A, allowing bypass of IdP-s...

CVE-2026-49284

SimpleSAMLphp versions before 1.18.6 contain an information disclosure vulnerability. Prior to 2.4.7 and 2.5.2, SimpleSAMLphp's SAML SP ACS path does not enforce the IdP selected for an SP-initiated login when unsigned Response/InResponseTo is combined with a signed assertion lacking...

SimpleSAMLphp SP accepts a response from an unexpected IdP when unsigned `Response/InResponseTo` is combined with a signed assertion lacking `SubjectConfirmationData/InResponseTo`

Summary SimpleSAMLphp's SAML SP ACS path does not enforce the IdP selected for an SP-initiated login. If a saved SP state contains ExpectedIssuer = IdP A, but the ACS receives a valid response from IdP B, the code logs a warning and continues processing instead of rejecting the response. That...

GHSA-Q8R6-XJ3F-WRRM SimpleSAMLphp SP accepts a response from an unexpected IdP when unsigned `Response/InResponseTo` is combined with a signed assertion lacking `SubjectConfirmationData/InResponseTo`

Summary SimpleSAMLphp's SAML SP ACS path does not enforce the IdP selected for an SP-initiated login. If a saved SP state contains ExpectedIssuer = IdP A, but the ACS receives a valid response from IdP B, the code logs a warning and continues processing instead of rejecting the response. That...

GHSA-5CJR-MXJ5-WMRX SimpleSAMLphp has Possible DoS via XPath Transform

Summary This library turned out to be vulnerable to Denial-of-Service attacks using XPath transforms. A mitigation has been put in place to restrict the number of transforms and to restrict transforms to only the transform-algorithms mentioned in the SAML 2.0 Core Specifications and specifically...

GHSA-6929-8P9F-26JX SimpleSAMLphp HTTP-Artifact TLS validator confusion allows cross-IdP authentication bypass

Summary SimpleSAMLphp's HTTP-Artifact receive path can treat an unsigned embedded SAML Response as cryptographically valid for the wrong IdP. In the HTTPArtifact::receive flow, the SOAP ArtifactResponse receives a TLS-based validator from SOAPClient::addSSLValidator. The embedded SAML Response th...

CVE-2026-46491

SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS server in the form of a SimpleSAMLphp module. Prior to version 7.0.3, simplesamlphp-module-casserver builds file paths for the file-based CAS ticket store by directly concatenating the configured ticket directory with an attacker-controll...

CVE-2026-46491

SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS server in the form of a SimpleSAMLphp module. Prior to version 7.0.3, simplesamlphp-module-casserver builds file paths for the file-based CAS ticket store by directly concatenating the configured ticket directory with an attacker-controll...

SimpleSAMLphp-casserver 路径遍历漏洞

SimpleSAMLphp-casserver is an open-source CAS protocol-compatible Single Sign-On server module developed by SimpleSAMLphp. Versions prior to 7.0.3 of SimpleSAMLphp-casserver contained a path traversal vulnerability. This vulnerability stemmed from the direct concatenation of attacker-controlled...

CVE-2026-46491

CVE-2026-46491 affects the simplesamlphp-module-casserver when using the FileSystemTicketStore. A attacker-controlled ticket identifier is concatenated into the ticket path, enabling path traversal (e.g., ../target.serialized) to read and unserialize files outside the ticket directory. In the CAS...

CVE-2025-65954

SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS server in the form of a SimpleSAMLphp module. In versions below 6.3.1 and 7.0.0, the logout endpoint accepts a url query parameter to redirect to. casserver treats that url as trusted, and either depending on configuration redirects the...

Path Traversal

SimpleSAMLphp-casserver is vulnerable to Path Traversal. The vulnerability is due to improper validation of user-controlled ticket identifiers when constructing file paths, where path traversal sequences can access and deserialize arbitrary files outside the ticket directory, allowing attackers t...

CVE-2025-65954

SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS server in the form of a SimpleSAMLphp module. In versions below 6.3.1 and 7.0.0, the logout endpoint accepts a url query parameter to redirect to. casserver treats that url as trusted, and either depending on configuration redirects the...

CVE-2025-65954 SimpleSAMLphp-casserver has an Open Redirect vulnerability via logout

SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS server in the form of a SimpleSAMLphp module. In versions below 6.3.1 and 7.0.0, the logout endpoint accepts a url query parameter to redirect to. casserver treats that url as trusted, and either depending on configuration redirects the...

CVE-2025-65954

SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS server in the form of a SimpleSAMLphp module. In versions below 6.3.1 and 7.0.0, the logout endpoint accepts a url query parameter to redirect to. casserver treats that url as trusted, and either depending on configuration redirects the...

CVE-2025-65954 SimpleSAMLphp-casserver has an Open Redirect vulnerability via logout

SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS server in the form of a SimpleSAMLphp module. In versions below 6.3.1 and 7.0.0, the logout endpoint accepts a url query parameter to redirect to. casserver treats that url as trusted, and either depending on configuration redirects the...