CVE-2025-47949CWE-347

samlify SAML Signature Wrapping attack

Critical · published May 19, 2025

CVSS v4.0
9.9
EPSS
0%
Percentile
39.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.9 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
EPSS
0.00468 · 39.6th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2025-05-19T19:28Z
EPSS history
Timeline
  • 19 MAY 19:28Z
    samlify SAML Signature Wrapping attack
    cvelistv5