CVE-2026-5529Public exploitNetwork attack vector

Cross-organization user disclosure via unscoped pageUser query

Published Apr 5, 2026 · Updated Apr 5, 2026

Improper authorization in Dromara lamp-cloud 5.8.0 through 5.8.1 allows remote authenticated users to enumerate out-of-scope users. The DefUserMapper pageUser query applies optional profile filters but omits caller-bound employee, company, and organization predicates. An account with permission to call POST /defUser/pageUser can read profile records for users in other organizations, including privileged accounts.

CVSS severity4.3
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Dromara lamp-cloud 5.8.0 through 5.8.1 allows remote authenticated users to enumerate out-of-scope users. The DefUserMapper pageUser query applies optional profile filters but omits caller-bound employee, company, and organization predicates. An account with permission to call POST /defUser/pageUser can read profile records for users in other organizations, including privileged accounts.

The record

CVE
CVE-2026-5529
Published
Apr 5, 2026
Updated
Apr 5, 2026
Vendor
Dromara
Product
lamp-cloud
Classifications
CWE-285, CWE-266, T1087
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 5, 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?

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

  1. Affected versionversion=5.8.0
  2. Affected versionversion=5.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Dromara · lamp-cloudversion=5.8.0; version=5.8.1

Published CVSS scores

2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
4.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0VulDBAV:N/AC:L/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-285Improper Authorization
CWE-266Incorrect Privilege Assignment
T1087Account Discovery

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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