CVE-2020-36255
HIGHCVSS 7.5/10EPSS 1.53%
Last modified
CVE-2020-36255 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in IdentityModel (aka ScottBrady.IdentityModel) before 1.3.0. The Branca implementation allows an attacker to modify and forge authentication tokens.. EPSS estimates a 1.53% chance of exploitation in the next 30 days.
Description
An issue was discovered in IdentityModel (aka ScottBrady.IdentityModel) before 1.3.0. The Branca implementation allows an attacker to modify and forge authentication tokens.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Identitymodel Project | Identitymodel | < 1.3.0 |
References
- https://github.com/scottbrady91/IdentityModel/compare/1.2.0...1.3.0Patch, Release Notes, Third Party Advisory
- https://github.com/scottbrady91/IdentityModel/issues/3Broken Link, Issue Tracking, Third Party Advisory
- https://github.com/scottbrady91/IdentityModel/issues/4Broken Link, Issue Tracking, Third Party Advisory
- https://github.com/scottbrady91/IdentityModel/compare/1.2.0...1.3.0Patch, Release Notes, Third Party Advisory
- https://github.com/scottbrady91/IdentityModel/issues/3Broken Link, Issue Tracking, Third Party Advisory
- https://github.com/scottbrady91/IdentityModel/issues/4Broken Link, Issue Tracking, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-36255?
An issue was discovered in IdentityModel (aka ScottBrady.IdentityModel) before 1.3.0. The Branca implementation allows an attacker to modify and forge authentication tokens.
How severe is CVE-2020-36255?
CVE-2020-36255 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.53% probability of exploitation in the next 30 days.
How do I fix CVE-2020-36255?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-36255?
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Scan your code nowSource: NVD / NIST