simplesamlphp saml2
4 published vulnerabilities name this product.
As the CNAs write it in their CVE records (vendor and product); the versions are theirs.
| CVE | Vulnerable versions | Title | Severity | Published | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| CVE-2026-49289 | >= 4.19.2, < 4.19.3 ; >= 4.20.2, < 4.20.3 | SimpleSAMLphp SAML2: Possible DoS via XPath Transform | HIGH 7.5 | 0.8 % | ||
| CVE-2026-49283 | < 4.19.3 ; >= 4.20.0, < 4.20.2 ; >= 5.0.0, < 5.0.6 ; … | SimpleSAMLphp HTTP-Artifact TLS validator confusion allows cross-IdP authentication bypass | HIGH 8.7 | 0.5 % | ||
| CVE-2025-27773 | < 4.17.0 ; >= 5.0.0-alpha.1, < 5.0.0-alpha.20 | SimpleSAMLphp SAML2 library has incorrect signature verification for HTTP-Redirect binding | HIGH 8.6 | 0.4 % | ||
| CVE-2024-52806 | < 4.6.14 ; >= 5.0.0-alpha.1, < 5.0.0-alpha.18 | SimpleSAMLphp SAML2 has an XXE in parsing SAML messages | HIGH 8.3 | 0.4 % |