CVE-2020-8441
CRITICALCVSS 9.8/10EPSS 4.84%
Last modified
CVE-2020-8441 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. JYaml through 1.3 allows remote code execution during deserialization of a malicious payload through the load() function. NOTE: this is a discontinued product.. EPSS estimates a 4.84% chance of exploitation in the next 30 days.
Description
JYaml through 1.3 allows remote code execution during deserialization of a malicious payload through the load() function. NOTE: this is a discontinued product.
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 |
|---|---|---|
| Jyaml Project | Jyaml | <= 1.3 |
References
- https://gist.github.com/j0lt-github/f5141abcacae63d434ecae211422153aExploit, Third Party Advisory
- https://github.com/mbechler/marshalsecThird Party Advisory
- https://github.com/mbechler/marshalsec/blob/master/marshalsec.pdfTechnical Description, Third Party Advisory
- https://sourceforge.net/p/jyaml/bugs/Third Party Advisory
- https://gist.github.com/j0lt-github/f5141abcacae63d434ecae211422153aExploit, Third Party Advisory
- https://github.com/mbechler/marshalsecThird Party Advisory
- https://github.com/mbechler/marshalsec/blob/master/marshalsec.pdfTechnical Description, Third Party Advisory
- https://sourceforge.net/p/jyaml/bugs/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-8441?
JYaml through 1.3 allows remote code execution during deserialization of a malicious payload through the load() function. NOTE: this is a discontinued product.
How severe is CVE-2020-8441?
CVE-2020-8441 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 4.84% probability of exploitation in the next 30 days.
How do I fix CVE-2020-8441?
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-2020-8441?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST