What’s Vulnerable › Vulnerabilities

CVE-2019-5645: Rapid7 Metasploit HTTP Handler Denial of Service

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 49.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-09-01 · updated 2026-10-23
• Weakness: CWE-400

Description

By sending a specially crafted HTTP GET request to a listening Rapid7 Metasploit HTTP handler, an attacker can register an arbitrary regular expression. When evaluated, this malicious handler can either prevent new HTTP handler sessions from being established, or cause a resource exhaustion on the Metasploit server.

Affected products

• Rapid7 Metasploit Framework: through 5.0.27

References

• https://github.com/rapid7/metasploit-framework/commit/5621d200ccf62e4a8f0dad80c1c74f4e0e52d86b
• https://github.com/rapid7/metasploit-framework/pull/11966
• https://github.com/rapid7/metasploit-framework/pull/12433
• https://github.com/rapid7/metasploit-framework/pull/12433

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