# simplesamlphp/saml2-legacy (Packagist) vulnerabilities

4 known vulnerabilities (4 high), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://packagist.org/packages/simplesamlphp/saml2-legacy

## Advisories (4)

### [CVE-2026-49289](https://cve.now/CVE-2026-49289): SimpleSAMLphp SAML2: Possible DoS via XPath Transform

- Severity: High 7.5
- Published: Aug 19, 2026
- Affected: from 4.20.0, fixed in 4.20.3; fixed in 4.19.3.

### [CVE-2026-49283](https://cve.now/CVE-2026-49283): SimpleSAMLphp HTTP-Artifact TLS validator confusion allows cross-IdP authentication bypass

- Severity: High 8.7
- Published: Aug 19, 2026
- Affected: from 4.20.0, fixed in 4.20.2; fixed in 4.19.3.

### [CVE-2025-27773](https://cve.now/CVE-2025-27773): SimpleSAMLphp SAML2 library has incorrect signature verification for HTTP-Redirect binding

- Severity: High 8.6
- Published: Mar 11, 2025
- Affected: fixed in 4.17.0.

### [CVE-2024-52806](https://cve.now/CVE-2024-52806): SimpleSAMLphp SAML2 has an XXE in parsing SAML messages

- Severity: High 8.3
- Published: Dec 2, 2024
- Affected: fixed in 4.6.14.

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