CVE-2020-12676
CVSS v3
9.1
CRITICAL
EPSS Score
2.9 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
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".
Technical details
- Published
- 2020-10-02
Frequently asked questions
What is CVE-2020-12676?
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".
Is CVE-2020-12676 actively exploited?
Active exploitation of CVE-2020-12676 has not been confirmed. Its EPSS score was 2.9% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-12676?
CVE-2020-12676 has a CVSS v3 base score of 9.1 (CRITICAL severity).
Is CVE-2020-12676 affecting your environment?
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