CVE-2025-27773
2 advisories.
Packagist/simplesamlphp/saml2 CVE-2025-27773: high 8.6, EPSS 0.41%
The SimpleSAMLphp SAML2 library incorrectly verifies signatures for HTTP-Redirect binding
Action: Upgrade simplesamlphp/saml2 to 4.17.0 or later.
composer require simplesamlphp/saml2:4.17.0composer require simplesamlphp/saml2:5.0.0-alpha.20Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 4.17.0 | - |
| 5.0.0-alpha.1 | 5.0.0-alpha.20 | - |
Fixed versions
| 4.17.0 | 5.0.0-alpha.20 |
Sources
- osv: GHSA-46r4-f8gj-xg56
- https://github.com/simplesamlphp/saml2/security/advisories/GHSA-46r4-f8gj-xg56
- https://nvd.nist.gov/vuln/detail/CVE-2025-27773
- https://github.com/simplesamlphp/saml2/commit/7867d6099dc7f31bed1ea10e5bea159c5623d2a0
- https://github.com/simplesamlphp/saml2
- https://github.com/simplesamlphp/saml2/blob/9545abd0d9d48388f2fa00469c5c1e0294f0303e/src/SAML2/HTTPRedirect.php#L104-L113
- https://github.com/simplesamlphp/saml2/blob/9545abd0d9d48388f2fa00469c5c1e0294f0303e/src/SAML2/HTTPRedirect.php#L178-L217
- https://lists.debian.org/debian-lts-announce/2025/05/msg00013.html
CVE-2025-27773 · published · modified · JSON
Packagist/simplesamlphp/saml2-legacy CVE-2025-27773: high 8.6, EPSS 0.41%
The SimpleSAMLphp SAML2 library incorrectly verifies signatures for HTTP-Redirect binding
Action: Upgrade simplesamlphp/saml2-legacy to 4.17.0 or later.
composer require simplesamlphp/saml2-legacy:4.17.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 4.17.0 | - |
Fixed versions
| 4.17.0 |
Sources
- osv: GHSA-46r4-f8gj-xg56#Packagist/simplesamlphp/saml2-legacy
- https://github.com/simplesamlphp/saml2/security/advisories/GHSA-46r4-f8gj-xg56
- https://nvd.nist.gov/vuln/detail/CVE-2025-27773
- https://github.com/simplesamlphp/saml2/commit/7867d6099dc7f31bed1ea10e5bea159c5623d2a0
- https://github.com/simplesamlphp/saml2
- https://github.com/simplesamlphp/saml2/blob/9545abd0d9d48388f2fa00469c5c1e0294f0303e/src/SAML2/HTTPRedirect.php#L104-L113
- https://github.com/simplesamlphp/saml2/blob/9545abd0d9d48388f2fa00469c5c1e0294f0303e/src/SAML2/HTTPRedirect.php#L178-L217
- https://lists.debian.org/debian-lts-announce/2025/05/msg00013.html
CVE-2025-27773 · published · modified · JSON