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TI-2020-10080 Aliases CVE-2020-12676GHSA-qh45-328h-49g4

FusionAuth fusionauth-samlv2 0.2.3 allows remote attackers to forge messages and bypass…

Priority MEDIUM 45CWE-347Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

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

Summary

FusionAuth fusionauth-samlv2 0.2.3 allows remote attackers to forge messages and bypass authentication via a SAML assertion that lacks a Signature element, aka a "Signature exclusion attack".

Why it matters now

EPSS 0.0293 87th percentileScored 2026-11-07
Public exploit Yes 4 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:fusionauth:samlv2:0.2.3:*:*:*:*:*:*:*0.2.3VulnerableFusionauth
  • cpe:2.3:a:fusionauth:samlv2:0.2.3:*:*:*:*:*:*:* Versions 0.2.3 Vulnerable ·Fusionauth

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-12676
  2. 2026-10-03 Alias added: GHSA-qh45-328h-49g4

References

Exploit 4

Advisory 1

Sources

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