CVE-2023-0599Network attack vector

Stored XSS via unsanitized host-service requests

Published Feb 1, 2023 · Updated Mar 25, 2025

Stored XSS in Rapid7 Metasploit Pro 4.21.2 and earlier allows remote authenticated users to run scripts in another user's browser. The individual host services page stores a crafted request string without sanitizing JavaScript before rendering it as HTML. Exploitation requires an authenticated account and another user to view the stored content, enabling arbitrary HTML and script execution in that user's privileged browser context.

CVSS severity6.1
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Rapid7 Metasploit Pro 4.21.2 and earlier allows remote authenticated users to run scripts in another user's browser. The individual host services page stores a crafted request string without sanitizing JavaScript before rendering it as HTML. Exploitation requires an authenticated account and another user to view the stored content, enabling arbitrary HTML and script execution in that user's privileged browser context.

The record

CVE
CVE-2023-0599
Published
Feb 1, 2023
Updated
Mar 25, 2025
Vendor
Rapid7
Product
Metasploit Pro
Classifications
CWE-79, CAPEC-592, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=4.21.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Rapid7 · Metasploit Proversion=0 <=4.21.2

Published CVSS scores

6.1Rapid7CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N
4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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