CVE-2024-39332Public exploitNetwork attack vector

Unauthenticated file write via unvalidated upload filename

Published Oct 31, 2024 · Updated Nov 1, 2024

Path traversal in Webswing 23.2.2 allows remote attackers to write files outside the configured upload directory through a browser upload. The backend accepts a filename supplied by the modifiable webswing-embed.js upload client over WebSocket and passes its path to the Java application without validation. No authentication or separate victim interaction is required; files can be written anywhere the Webswing service account can access, enabling startup-script replacement and remote code execution.

CVSS severity9.8
Critical
EPSS probability1.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Webswing 23.2.2 allows remote attackers to write files outside the configured upload directory through a browser upload. The backend accepts a filename supplied by the modifiable webswing-embed.js upload client over WebSocket and passes its path to the Java application without validation. No authentication or separate victim interaction is required; files can be written anywhere the Webswing service account can access, enabling startup-script replacement and remote code execution.

The record

CVE
CVE-2024-39332
Published
Oct 31, 2024
Updated
Nov 1, 2024
Vendor
Webswing Ltd.
Product
Webswing
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 31, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 1, 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?

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

  1. Affected versionversion=23.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Webswing Ltd. · Webswingversion=23.2.2

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

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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