What’s Vulnerable › Vulnerabilities

CVE-2025-47949: samlify SAML Signature Wrapping attack

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-19 · updated 2026-06-17
• Weakness: CWE-347

Description

samlify is a Node.js library for SAML single sign-on. A Signature Wrapping attack has been found in samlify prior to version 2.10.0, allowing an attacker to forge a SAML Response to authenticate as any user. An attacker would need a signed XML document by the identity provider. Version 2.10.0 fixes the issue.

Affected products

• tngan samlify: before 2.10.0 — fixed in 2.10.0

How to fix

Upgrade to a fixed version: tngan samlify 2.10.0. Check the vendor advisory for mitigations.

References

• https://github.com/tngan/samlify/commit/115679acd89f0a37ea3ebd8fff7db54fca3e8af3
• https://github.com/tngan/samlify/security/advisories/GHSA-r683-v43c-6xqv

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