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CVE-2025-27773

SimpleSAMLphp SAML2 library has incorrect signature verification for HTTP-Redirect binding PUBLISHED

Description (CNA)

The SimpleSAMLphp SAML2 library is a PHP library for SAML2 related functionality. Prior to versions 4.17.0 and 5.0.0-alpha.20, there is a signature confusion attack in the HTTPRedirect binding. An attacker with any signed SAMLResponse via the HTTP-Redirect binding can cause the application to accept an unsigned message. Versions 4.17.0 and 5.0.0-alpha.20 contain a fix for the issue.

Affected (CNA)

Vendor / productVersions
simplesamlphp / saml2affected < 4.17.0; affected >= 5.0.0-alpha.1, < 5.0.0-alpha.20

CWE

CWE-347

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.