What’s Vulnerable › Vulnerabilities
CVE-2020-24916
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 17.4% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2020-09-09 · updated 2026-06-17
- Weakness: CWE-78
Description
CGI implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to OS command injection.
Affected products
- Canonical Ubuntu Linux: 18.04
- Debian Linux: 9.0, 10.0
- yaws: from 1.81 through 2.0.7
References
- https://github.com/erlyaws/yaws/commits/master
- https://github.com/vulnbe/poc-yaws-cgi-shell-injection
- https://lists.debian.org/debian-lts-announce/2020/09/msg00022.html
- https://packetstormsecurity.com/files/159106/Yaws-2.0.7-XML-Injection-Command-Injection.html
- https://usn.ubuntu.com/4569-1/
- https://vuln.be/post/yaws-xxe-and-shell-injections/
- https://www.debian.org/security/2020/dsa-4773
- https://github.com/erlyaws/yaws/commits/master
- https://github.com/vulnbe/poc-yaws-cgi-shell-injection
- https://lists.debian.org/debian-lts-announce/2020/09/msg00022.html
- https://packetstormsecurity.com/files/159106/Yaws-2.0.7-XML-Injection-Command-Injection.html
- https://usn.ubuntu.com/4569-1/
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