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
References4
- github.com/rapid7/metasploit-framework/pull/12433 PatchThird Party Advisory
- github.com/rapid7/metasploit-framework/pull/12433 PatchThird Party Advisory
- github.com/rapid7/metasploit-framework/commit/5621d200ccf62e4a8…
- github.com/rapid7/metasploit-framework/pull/11966
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 49% percentile: 99 · as of 11 November 2026
- CWE
- CWE-400
Could this be exploited in your environment?
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