CVE-2026-57288: Jenkins Active Directory Plugin 2.41.1 and earlier does not escape the user name before building the LDAP sear

Q: How do I fix CVE-2026-57288?

active directory: upgrade to 2.41.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-57288 being exploited?

CVE-2026-57288 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-57288 affect?

CVE-2026-57288 affects active directory. Severity is low (CVSS 3.7). Jenkins Active Directory Plugin 2.41.1 and earlier does not escape the user name before building the LDAP search filter in the Windows native (ADSI) authentication path, allowing unauthenticated attackers to inject LDAP wildcard characters

Q: How urgent is CVE-2026-57288?

Priority 24/100. Remotely exploitable, no login, no user action

Routine

LOW 3.7REMOTEUPGRADE

CVE-2026-57288 is a low-severity flaw (CVSS 3.7) affecting active directory. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Jenkins Active Directory Plugin 2.41.1 and earlier does not escape the user name before building the LDAP search filter in the Windows native (ADSI) authentication path, allowing unauthenticated attackers to inject LDAP wildcard characters to enumerate directory entries and to authenticate as a matching user whose password they know without knowing their exact user name.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	3.7 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-90
Published	2026-06-24
Last modified	2026-10-25

Publisher (CNA): Jenkins Project · Vendor: jenkins

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-24 14:17 UTCPublished CVE record published
2026-10-25 22:10 UTCUpdated Record last modified

jenkins active directory UPGRADE

Affected: < 2.41.2

Fixed in: 2.41.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy active-directory || rpm -q active-directory || active-directory --version

2. UPGRADE to 2.41.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade active-directory

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade active-directory

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-57288?

active directory: upgrade to 2.41.2. Exact commands for each OS are on this page.

Is CVE-2026-57288 being exploited?

CVE-2026-57288 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-57288 affect?

CVE-2026-57288 affects active directory. Severity is low (CVSS 3.7). Jenkins Active Directory Plugin 2.41.1 and earlier does not escape the user name before building the LDAP search filter in the Windows native (ADSI) authentication path, allowing unauthenticated attackers to inject LDAP wildcard characters

How urgent is CVE-2026-57288?

Priority 24/100. Remotely exploitable, no login, no user action

Software pages

Jenkins vulnerabilities · Windows vulnerabilities · Active Directory vulnerabilities

References

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