What’s Vulnerable › Vulnerabilities

CVE-2019-20800

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-05-18 · updated 2026-06-17
• Weakness: CWE-787

Description

In Cherokee through 1.2.104, remote attackers can trigger an out-of-bounds write in cherokee_handler_cgi_add_env_pair in handler_cgi.c by sending many request headers, as demonstrated by a GET request with many "Host: 127.0.0.1" headers.

Affected products

• Cherokee-Project Cherokee: through 1.2.104

References

• https://github.com/cherokee/webserver/issues/1224
• https://logicaltrust.net/blog/2019/11/cherokee.html
• https://security.gentoo.org/glsa/202012-09
• https://github.com/cherokee/webserver/issues/1224
• https://logicaltrust.net/blog/2019/11/cherokee.html
• https://security.gentoo.org/glsa/202012-09

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