What’s Vulnerable › Vulnerabilities

CVE-2020-8441

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-02-19 · updated 2026-06-17
• Weakness: CWE-502

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.

Affected products

• Jyaml Project Jyaml: through 1.3

References

• https://gist.github.com/j0lt-github/f5141abcacae63d434ecae211422153a
• https://github.com/mbechler/marshalsec
• https://github.com/mbechler/marshalsec/blob/master/marshalsec.pdf
• https://security.netapp.com/advisory/ntap-20200313-0001/
• https://sourceforge.net/p/jyaml/bugs/
• https://gist.github.com/j0lt-github/f5141abcacae63d434ecae211422153a
• https://github.com/mbechler/marshalsec
• https://github.com/mbechler/marshalsec/blob/master/marshalsec.pdf
• https://security.netapp.com/advisory/ntap-20200313-0001/
• https://sourceforge.net/p/jyaml/bugs/

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