What is CVE-2020-5261?

CVE-2020-5261 is a high-severity vulnerability in Sustainsys Saml2, classified under Authentication Bypass by Capture-replay. CVSS score: 8.2/10. Published 2020-03-25.

How severe is CVE-2020-5261?

High severity. CVSS v3 base score is 8.2 out of 10.

Vulnerability in Sustainsys Saml2

CVE-2020-5261

Saml2 Authentication services for ASP.NET (NuGet package Sustainsys.Saml2) greater than 2.0.0, and less than version 2.5.0 has a faulty implementation of Token Replay Detection. Token Replay Detection is an important defence in depth measu…

EPSS: 0.003 (52.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N.

Affected products

Sustainsys Saml2 — versions >= 2.0.0, < 2.5.0

Weakness classification (CWE)

CWE-294 — Authentication Bypass by Capture-replay

References

github.com/Sustainsys/Saml2/security/advisories/GHSA-g6j2-ch25-5mmv (x_refsource_CONFIRM)
github.com/Sustainsys/Saml2/commit/e58e0a1aff2b1ead6aca080b7cdced55ee6d5241 (x_refsource_MISC)
github.com/Sustainsys/Saml2/issues/711 (x_refsource_MISC)

Frequently asked questions

What is CVE-2020-5261?: CVE-2020-5261 is a high-severity vulnerability in Sustainsys Saml2, classified under Authentication Bypass by Capture-replay. CVSS score: 8.2/10. Published 2020-03-25.
How severe is CVE-2020-5261?: High severity. CVSS v3 base score is 8.2 out of 10.