CVE-2023-38303Public exploitNetwork attack vector

Command execution via stored real-name script

Published Jul 31, 2023 · Updated Oct 22, 2024

Stored XSS in Webmin 2.021 allows remote authenticated users to execute commands by placing script code in a user's real name. The Users and Groups module stores the real-name value without neutralizing it and renders it in the user-list pop-up, where the browser executes the injected script. A user must open the user-list pop-up after the authenticated attacker creates the crafted account, triggering code in that user's browser session.

CVSS severity5.4
Medium
EPSS probability0.80%
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 Webmin 2.021 allows remote authenticated users to execute commands by placing script code in a user's real name. The Users and Groups module stores the real-name value without neutralizing it and renders it in the user-list pop-up, where the browser executes the injected script. A user must open the user-list pop-up after the authenticated attacker creates the crafted account, triggering code in that user's browser session.

The record

CVE
CVE-2023-38303
Published
Jul 31, 2023
Updated
Oct 22, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059Command and Scripting Interpreter

Public exploit references

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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