CVE-2021-23413
MEDIUMCVSS 5.3/10EPSS 3.31%
Last modified
CVE-2021-23413 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. This affects the package jszip before 3.7.0. Crafting a new zip file with filenames set to Object prototype values (e.g __proto__, toString, etc) results in a returned object with a modified prototype instance.. EPSS estimates a 3.31% chance of exploitation in the next 30 days.
Description
This affects the package jszip before 3.7.0. Crafting a new zip file with filenames set to Object prototype values (e.g __proto__, toString, etc) results in a returned object with a modified prototype instance.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Jszip Project | Jszip | < 3.7.0 |
References
- https://github.com/Stuk/jszip/commit/22357494f424178cb416cdb7d93b26dd4f824b36Patch, Third Party Advisory
- https://github.com/Stuk/jszip/pull/766Third Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1251499Exploit, Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1251498Exploit, Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JS-JSZIP-1251497Exploit, Patch, Third Party Advisory
- https://github.com/Stuk/jszip/commit/22357494f424178cb416cdb7d93b26dd4f824b36Patch, Third Party Advisory
- https://github.com/Stuk/jszip/pull/766Third Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1251499Exploit, Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1251498Exploit, Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JS-JSZIP-1251497Exploit, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-23413?
This affects the package jszip before 3.7.0. Crafting a new zip file with filenames set to Object prototype values (e.g __proto__, toString, etc) results in a returned object with a modified prototype instance.
How severe is CVE-2021-23413?
CVE-2021-23413 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 3.31% probability of exploitation in the next 30 days.
How do I fix CVE-2021-23413?
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-2021-23413?
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