What’s Vulnerable › Vulnerabilities

CVE-2018-5387

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-07-24 · updated 2026-06-17
• Weakness: CWE-287

Description

Wizkunde SAMLBase may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass authentication to SAML service providers.

Affected products

• Wizkunde SAMLBase: before 1.4.2 — fixed in 1.4.2

How to fix

Upgrade to a fixed version: Wizkunde SAMLBase 1.4.2. Check the vendor advisory for mitigations.

References

• https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations
• https://github.com/GoGentoOSS/SAMLBase/commit/482cdf8c090e0f1179073034ebcb609ac7c3f5b3
• https://github.com/GoGentoOSS/SAMLBase/issues/3
• https://www.kb.cert.org/vuls/id/475445
• https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations
• https://github.com/GoGentoOSS/SAMLBase/commit/482cdf8c090e0f1179073034ebcb609ac7c3f5b3
• https://github.com/GoGentoOSS/SAMLBase/issues/3
• https://www.kb.cert.org/vuls/id/475445

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