CVE-2023-34878Public exploitNetwork attack vector

Sensitive file disclosure via unrestricted archive paths

Published Jun 14, 2023 · Updated Jan 2, 2025

Information disclosure in UJCMS 6.0.2 allows remote attackers to download source and configuration files through a crafted archive request. AbstractWebFileController.downloadZip checks dir and names for traversal syntax and illegal characters but does not restrict them to approved directories, allowing WEB-INF/classes content to be archived. The published assessment requires no prior privileges; exploitation also requires Tomcat deployment and a present or creatable HTML directory, and the reported impact is limited to file confidentiality.

CVSS severity7.5
High
EPSS probability0.70%
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 6.0.2 allows remote attackers to download source and configuration files through a crafted archive request. AbstractWebFileController.downloadZip checks dir and names for traversal syntax and illegal characters but does not restrict them to approved directories, allowing WEB-INF/classes content to be archived. The published assessment requires no prior privileges; exploitation also requires Tomcat deployment and a present or creatable HTML directory, and the reported impact is limited to file confidentiality.

The record

CVE
CVE-2023-34878
Published
Jun 14, 2023
Updated
Jan 2, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-203, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 2, 2025Record 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

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-203Observable Discrepancy
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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