CVE-2021-23807
CRITICALCVSS 9.8/10EPSS 2.61%
Last modified
CVE-2021-23807 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. This affects the package jsonpointer before 5.0.0. A type confusion vulnerability can lead to a bypass of a previous Prototype Pollution fix when the pointer components are arrays.. EPSS estimates a 2.61% chance of exploitation in the next 30 days.
Description
This affects the package jsonpointer before 5.0.0. A type confusion vulnerability can lead to a bypass of a previous Prototype Pollution fix when the pointer components are arrays.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Janl | Jsonpointer | < 5.0.0 |
References
- https://github.com/janl/node-jsonpointer/commit/a0345f3550cd9c4d89f33b126390202b89510ad4Patch, Third Party Advisory
- https://github.com/janl/node-jsonpointer/pull/51Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1910273Exploit, Mitigation, Patch, Third Party Advisory, VDB Entry
- https://snyk.io/vuln/SNYK-JS-JSONPOINTER-1577288Exploit, Mitigation, Patch, Third Party Advisory, VDB Entry
- https://github.com/janl/node-jsonpointer/commit/a0345f3550cd9c4d89f33b126390202b89510ad4Patch, Third Party Advisory
- https://github.com/janl/node-jsonpointer/pull/51Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1910273Exploit, Mitigation, Patch, Third Party Advisory, VDB Entry
- https://snyk.io/vuln/SNYK-JS-JSONPOINTER-1577288Exploit, Mitigation, Patch, Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-23807?
This affects the package jsonpointer before 5.0.0. A type confusion vulnerability can lead to a bypass of a previous Prototype Pollution fix when the pointer components are arrays.
How severe is CVE-2021-23807?
CVE-2021-23807 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.61% probability of exploitation in the next 30 days.
How do I fix CVE-2021-23807?
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-2021-23807?
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