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Vulnerabilities

Vulnerability · CVE-2019-5645

By sending a specially crafted HTTP GET request to a listening Rapid7 Metasploit HTTP handler, an attacker can register an arbitrary regular expression.

Published Sep 1, 2020 · catalog updated Oct 23, 2026 · By sending a specially

Check this week

CVE-2019-5645 is not in CISA KEV. FIRST estimates a 49.18% chance of exploitation in the next 30 days. Check whether you run By sending a specially.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (By sending a specially).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
49.18%
Remediation
Version ranges on file
Affected products
cpe rapid7/metasploit

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe rapid7/metasploit<= 5.0.27

How to fix CVE-2019-5645

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2019-5645 is not in CISA KEV. FIRST estimates a 49.18% chance of exploitation in the next 30 days. Check whether you run By sending a specially.

Which versions are affected?

Compare what you have installed with <= 5.0.27. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-400: Uncontrolled Resource Consumption. EPSS 49.18%. There is no CISA KEV listing. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 1, 2020 · NIST NVD

    Detected

    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.

  2. Oct 23, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2019-5645

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2019-5645

    30-day exploitation probability 49.18%

    first.org
  • Metasploit ModulesPublic exploit moduleauxiliary_dos/http/metasploit_httphandler_dos

    Public module reference (normal). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2019-5645

    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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.