CVE-2021-23900
HIGHCVSS 7.5/10EPSS 2.10%
Last modified
CVE-2021-23900 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. OWASP json-sanitizer before 1.2.2 can output invalid JSON or throw an undeclared exception for crafted input. This may lead to denial of service if the application is not prepared to handle these situations.. EPSS estimates a 2.10% chance of exploitation in the next 30 days.
Description
OWASP json-sanitizer before 1.2.2 can output invalid JSON or throw an undeclared exception for crafted input. This may lead to denial of service if the application is not prepared to handle these situations.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Owasp | Json-Sanitizer | < 1.2.2 |
References
- https://github.com/OWASP/json-sanitizer/commit/a37f594f7378a1c76b3283e0dab9e1ab1dc0247ePatch, Third Party Advisory
- https://github.com/OWASP/json-sanitizer/compare/v1.2.1...v1.2.2Patch, Third Party Advisory
- https://groups.google.com/g/json-sanitizer-support/c/dAW1AeNMoA0Third Party Advisory
- https://github.com/OWASP/json-sanitizer/commit/a37f594f7378a1c76b3283e0dab9e1ab1dc0247ePatch, Third Party Advisory
- https://github.com/OWASP/json-sanitizer/compare/v1.2.1...v1.2.2Patch, Third Party Advisory
- https://groups.google.com/g/json-sanitizer-support/c/dAW1AeNMoA0Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-23900?
OWASP json-sanitizer before 1.2.2 can output invalid JSON or throw an undeclared exception for crafted input. This may lead to denial of service if the application is not prepared to handle these situations.
How severe is CVE-2021-23900?
CVE-2021-23900 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.10% probability of exploitation in the next 30 days.
How do I fix CVE-2021-23900?
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-2021-23900?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST