CVE-2026-48919: Jenkins Active Directory Plugin 2.41 and earlier deserializes data from LDAP referrals without validation.

Q: How do I fix CVE-2026-48919?

active directory: upgrade to newer than 2.41. Exact commands for each OS are on this page.

Q: Is CVE-2026-48919 being exploited?

CVE-2026-48919 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-2026-48919 affect?

CVE-2026-48919 affects active directory. Severity is medium (CVSS 6.6). Jenkins Active Directory Plugin 2.41 and earlier deserializes data from LDAP referrals without validation.

Q: How urgent is CVE-2026-48919?

Priority 28/100. No elevated risk signals yet.

Routine

MEDIUM 6.6UPGRADE

CVE-2026-48919 is a medium-severity flaw (CVSS 6.6) 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 and earlier deserializes data from LDAP referrals without validation.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.6 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	High
User interaction	None
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-502
Published	2026-05-27
Last modified	2026-10-14

Publisher (CNA): Jenkins Project · Vendor: jenkins

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-27 15:16 UTCPublished CVE record published
2026-10-14 20:10 UTCUpdated Record last modified

jenkins active directory UPGRADE

Affected: <= 2.41

Fixed in: newer than 2.41

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 newer than 2.41 (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-2026-48919?

active directory: upgrade to newer than 2.41. Exact commands for each OS are on this page.

Is CVE-2026-48919 being exploited?

CVE-2026-48919 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-2026-48919 affect?

CVE-2026-48919 affects active directory. Severity is medium (CVSS 6.6). Jenkins Active Directory Plugin 2.41 and earlier deserializes data from LDAP referrals without validation.

How urgent is CVE-2026-48919?

Priority 28/100. No elevated risk signals yet.

Software pages

Jenkins vulnerabilities · Active Directory vulnerabilities

Related CVEs

CVE-2026-57288 LOW 3.7 UPGRADE Jenkins Active Directory Plugin 2.41.1 and earlier does not escape the user name before building the LDAP sear
CVE-2026-48918 MEDIUM 6.6 UPGRADE Jenkins Active Directory Plugin 2.41 and earlier follows LDAP referrals by default.

References

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