CVE-2026-44671: ZITADEL is an open source identity management platform

This month

HIGH 7.5REMOTEUPGRADE

CVE-2026-44671 is a high-severity flaw (CVSS 7.5) affecting zitadel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ZITADEL is an open source identity management platform. From 2.71.11 to before 3.4.10 and 4.15.0, a vulnerability was discovered in Zitadel's LDAP identity provider implementation, which fails to properly escape user-provided usernames before incorporating them into LDAP search filters. This allows unauthenticated attackers to perform LDAP Filter Injection during the login process. While this vulnerability does not allow for a full authentication

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-90
Published	2026-05-14
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: zitadel

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-14 22:16 UTCPublished CVE record published
2026-06-17 10:51 UTCUpdated Record last modified

zitadel zitadel UPGRADE

Affected: >= 2.71.11 and < 3.4.10 · >= 4.0.0 and < 4.15.0

Fixed in: 3.4.10, 4.15.0

Safe to downgrade to: a release before 2.71.11

1. Check installed version

apt-cache policy zitadel || rpm -q zitadel || zitadel --version

2. UPGRADE to 3.4.10 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade zitadel

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade zitadel

Note

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

3. If no update is available yet, DOWNGRADE to a release before 2.71.11 (Debian / Ubuntu)

apt-cache madison zitadel sudo apt install zitadel=<VERSION_BEFORE_2.71.11> sudo apt-mark hold zitadel

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list zitadel sudo dnf downgrade zitadel-<VERSION_BEFORE_2.71.11> sudo dnf versionlock add zitadel

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-44671?

zitadel: upgrade to 3.4.10, 4.15.0. Exact commands for each OS are on this page.

Is CVE-2026-44671 being exploited?

CVE-2026-44671 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-2026-44671 affect?

CVE-2026-44671 affects zitadel. Severity is high (CVSS 7.5). ZITADEL is an open source identity management platform. From 2.71.11 to before 3.4.10 and 4.15.0, a vulnerability was discovered in Zitadel's LDAP identity provider implementation, which fails to properly escape user-provided usernames befo

How urgent is CVE-2026-44671?

Priority 42/100. High severity; Remotely exploitable, no login, no user action

References

← Back to latest CVEs