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TI-2023-21051 Aliases CVE-2023-40178GHSA-vx8m-6fhw-pccw

@node-saml/node-saml's validatePostRequestAsync does not include checkTimestampsValidityError

Priority MEDIUM 63CWE-347Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-347.

Summary

Node-SAML is a SAML library not dependent on any frameworks that runs in Node. The lack of checking of current timestamp allows a LogoutRequest XML to be reused multiple times even when the current time is past the NotOnOrAfter. This could impact the user where they would be logged out from an expired LogoutRequest. In bigger contexts, if LogoutRequests are sent out in mass to different SPs, this could impact many users on a large scale. This issue was patched in version 4.0.5.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00491 42nd percentileScored 2026-11-07
Fix Fixed node-saml (node-saml): 4.0.5@node-saml/node-saml (npm): 4.0.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
node-samlnode-samlbefore 4.0.54.0.5Patch availableCNA
—@node-saml/node-saml (npm)before 4.0.54.0.5Patch availableGHSA-vx8m-6fhw-pccw
  • node-saml Vendornode-saml Affected before 4.0.5 Fixed in 4.0.5 Patch available CNA
  • @node-saml/node-saml (npm) Vendor— Affected before 4.0.5 Fixed in 4.0.5 Patch available GHSA-vx8m-6fhw-pccw

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:node_saml_project:node_saml:*:*:*:*:*:node.js:*:*before 4.0.5VulnerableNode Saml Project
  • cpe:2.3:a:node_saml_project:node_saml:*:*:*:*:*:node.js:*:* Versions before 4.0.5 Vulnerable ·Node Saml Project

Remediation

  • Fix · CNA node-saml (node-saml) Fixed in 4.0.5
  • Fix · GHSA-vx8m-6fhw-pccw @node-saml/node-saml (npm) Fixed in 4.0.5 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-40178
  2. 2026-10-03 Alias added: GHSA-vx8m-6fhw-pccw

References

Patch 1

Advisory 2

Other 2

  • TI-2024-21829 XML signature verification bypass due improper verification of signature / signature spoofing CVSS 3.1CRITICAL 10.0
  • TI-2025-21187 xml-crypto Vulnerable to XML Signature Verification Bypass via DigestValue Comment CVSS 4.0CRITICAL 9.3
  • TI-2025-21186 xml-crypto Vulnerable to XML Signature Verification Bypass via Multiple SignedInfo References CVSS 4.0CRITICAL 9.3
  • TI-2025-34225 Node-SAML Contains SAML Signature Verification Vulnerability CVSS 3.1CRITICAL 10.0
  • TI-2025-34181 Node-SAML SAML Authentication Bypass CVSS 4.0CRITICAL 9.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences