CVE-2023-40983Public exploitNetwork attack vector

Browser script execution via reflected search result

Published Sep 15, 2023 · Updated Jul 9, 2026

Reflected XSS in Webmin 2.100 File Manager allows remote attackers to execute scripts in a user's browser through a crafted search result. The reproduction procedure stores an XSS payload as a cloned module name and later renders it unsafely in the Usermin Configuration module list; this conflicts with the CVE's File Manager description. Exploitation requires a user to open the affected interface, and successful script execution is confined to that user's Webmin browser session.

CVSS severity6.1
Medium
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Webmin 2.100 File Manager allows remote attackers to execute scripts in a user's browser through a crafted search result. The reproduction procedure stores an XSS payload as a cloned module name and later renders it unsafely in the Usermin Configuration module list; this conflicts with the CVE's File Manager description. Exploitation requires a user to open the affected interface, and successful script execution is confined to that user's Webmin browser session.

The record

CVE
CVE-2023-40983
Published
Sep 15, 2023
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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