CVE-2026-57288Network attack vector

Directory enumeration and account impersonation via LDAP wildcards

Published Jun 24, 2026 · Updated Jun 24, 2026

LDAP injection in Jenkins Active Directory Plugin 2.41.1 and earlier allows remote attackers to enumerate directory users and groups. The Windows native ADSI path inserts the supplied user name into an LDAP search filter without escaping wildcard characters. The path requires a domain-joined Windows host with no domain configured; a matching user's password enables login without the exact user name.

CVSS severity3.7
Low
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

LDAP injection in Jenkins Active Directory Plugin 2.41.1 and earlier allows remote attackers to enumerate directory users and groups. The Windows native ADSI path inserts the supplied user name into an LDAP search filter without escaping wildcard characters. The path requires a domain-joined Windows host with no domain configured; a matching user's password enables login without the exact user name.

The record

CVE
CVE-2026-57288
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
Jenkins Project
Product
Active Directory
Classifications
CWE-90, T1078.002, T1069.002, T1087.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 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=0 <=2.41.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jenkins Project · Active Directoryversion=0 <=2.41.1

Published CVSS scores

3.7CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-90Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
T1078.002Domain Accounts
T1069.002Domain Groups
T1087.002Domain Account

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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