CVE-2023-3231Public exploitNetwork attack vector

Authenticated file disclosure via unrestricted ZIP directories

Published Jun 14, 2023 · Updated Aug 2, 2024

Information disclosure in UJCMS 6.0.0 through 6.0.2 allows remote authenticated users to download server files through its ZIP handler. AbstractWebFileController.downloadZip checks the dir and names parameters separately but does not constrain the directories that may be archived. In a Tomcat deployment, backend access permits WEB-INF/classes to be packaged, exposing application source code and configuration files.

CVSS severity6.5
Medium
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in UJCMS 6.0.0 through 6.0.2 allows remote authenticated users to download server files through its ZIP handler. AbstractWebFileController.downloadZip checks the dir and names parameters separately but does not constrain the directories that may be archived. In a Tomcat deployment, backend access permits WEB-INF/classes to be packaged, exposing application source code and configuration files.

The record

CVE
CVE-2023-3231
Published
Jun 14, 2023
Updated
Aug 2, 2024
Vendor
Dromara
Product
UJCMS
Classifications
CWE-200, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=6.0.0
  2. Affected versionversion=6.0.1
  3. Affected versionversion=6.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Dromara · UJCMSversion=6.0.0; version=6.0.1; version=6.0.2

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
3.1VulDBCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
2.1VulDBAV:N/AC:H/Au:S/C:P/I:N/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 exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1005Data from Local System

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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