CVE-2023-38304Public exploitNetwork attack vector

Browser script execution via unsanitized group names

Published Jul 31, 2023 · Updated Oct 18, 2024

Stored XSS in Webmin 2.021 allows remote authenticated users to execute scripts in another user's browser via a malicious group name. The Users and Groups function stores the Group Name field without neutralizing script markup and later inserts it into a user-details page. Exploitation requires group-creation access and a different user to view the affected user details; the script then runs in that viewer's Webmin origin.

CVSS severity5.4
Medium
EPSS probability0.47%
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 scripts in another user's browser via a malicious group name. The Users and Groups function stores the Group Name field without neutralizing script markup and later inserts it into a user-details page. Exploitation requires group-creation access and a different user to view the affected user details; the script then runs in that viewer's Webmin origin.

The record

CVE
CVE-2023-38304
Published
Jul 31, 2023
Updated
Oct 18, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 18, 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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1059.007Command and Scripting Interpreter: JavaScript

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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