CVE-2026-39359: Wazuh is a free and open source platform used for threat prevention, detection, and response

This week

HIGH 7.5REMOTEUPGRADE

CVE-2026-39359 is a high-severity flaw (CVSS 7.5) affecting wazuh. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions 4.0.0 through 4.10.3 and 4.11.0 through 4.14.4, a logic flaw affects the Wazuh Manager's enrollment daemon (authd) and synchronization daemon (remoted). The authd process allows agents to select a group during enrollment but does not filter path traversal sequences such as "..." While the manager checks for the group directory using wopendir(

Why this priority

High severity
Public exploit reference
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	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-07-17
Last modified	2026-07-20

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

Last updated 2026-07-20 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-17 00:16 UTCPublished CVE record published
2026-07-20 13:42 UTCUpdated Record last modified

wazuh wazuh UPGRADE

Affected: >= 4.0.0 and < 4.10.4 · >= 4.11.0 and < 4.14.5

Fixed in: 4.10.4, 4.14.5

Safe to downgrade to: a release before 4.0.0

1. Check installed version

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

2. UPGRADE to 4.10.4 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wazuh

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 4.0.0 (Debian / Ubuntu)

apt-cache madison wazuh sudo apt install wazuh=<VERSION_BEFORE_4.0.0> sudo apt-mark hold wazuh

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

dnf --showduplicates list wazuh sudo dnf downgrade wazuh-<VERSION_BEFORE_4.0.0> sudo dnf versionlock add wazuh

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-2026-39359?

wazuh: upgrade to 4.10.4, 4.14.5. Exact commands for each OS are on this page.

Is CVE-2026-39359 being exploited?

CVE-2026-39359 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-2026-39359 affect?

CVE-2026-39359 affects wazuh. Severity is high (CVSS 7.5). Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions 4.0.0 through 4.10.3 and 4.11.0 through 4.14.4, a logic flaw affects the Wazuh Manager's enrollment daemon (authd) and synchronization

How urgent is CVE-2026-39359?

Priority 44/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Wazuh vulnerabilities

Related CVEs

CVE-2026-44252 HIGH 8.8 UPGRADE Wazuh is a free and open source platform used for threat prevention, detection, and response
CVE-2026-46343 HIGH 7.2 UPGRADE Wazuh is a free and open source platform used for threat prevention, detection, and response
CVE-2026-44253 MEDIUM 4.9 UPGRADE Wazuh is a free and open source platform used for threat prevention, detection, and response
CVE-2026-44254 MEDIUM 5.3 UPGRADE Wazuh is a free and open source platform used for threat prevention, detection, and response
CVE-2026-32983 MEDIUM 5.8 UPGRADE Wazuh Manager authd service in wazuh-manager packages through version 4.7.3 contains an improper restriction o

References

← Back to latest CVEs