Wazuh Manager: Remote command validation bypass via case mismatch
Summary
Wazuh Manager validates uploaded ossec.conf files with a case-sensitive check, while wazuh-logcollector parses the same file case-insensitively. An authenticated user with manager:update_config can hide a command localfile from the validator using an uppercase LOG_FORMAT element, and the collector then runs the command as root after a configuration reload or manager restart. The CVSS 4.0 base score in the input is 8.6; VulnCheck rates it 9.4 with subsequent-system impacts.
Affected
- wazuh-manager 4.14.3 to before 4.14.8
- wazuh-manager 4.10.4 to before 4.10.5
- Source note: some aggregators list only the 4.14.x branch; the official CVE record and the GitHub advisory both list 4.10.x.
Fixed in
- Upgrade wazuh-manager 4.14.x to 4.14.8 or later
- Upgrade wazuh-manager 4.10.x to 4.10.5 or later
Workaround
Unknown.
The vendor describes no workaround. Setting remote_commands.localfile.allow to no does not prevent the bypass. Limiting manager:update_config to the minimum number of administrators reduces the risk until the upgrade is done.
Exploitation
- CISA SSVC: exploitation status PoC, not automatable, total technical impact
- A public proof of concept is referenced; it reportedly chains this flaw with a second CVE
- No confirmed exploitation in the wild found at publication
- Not listed in CISA KEV at the time of research
Our recommendation
- Inventory all Wazuh managers, including cluster nodes and test systems, and record their versions
- Upgrade affected managers to 4.14.8 or 4.10.5 or later
- Until the upgrade is complete, restrict manager:update_config to required administrators and review recent configuration changes and reloads
- Check whether the manager API is reachable from untrusted networks and restrict access
- Monitor for unexpected localfile or command entries in ossec.conf
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Wazuh v4.14.8 release github.com
- GitHub Security Advisory GHSA-cjf8-wjx6-hjw6 github.com
- VulnCheck advisory www.vulncheck.com
- ACN: available PoCs for Wazuh vulnerabilities www.acn.gov.it
- Wazuh 4.14.8 release notes documentation.wazuh.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 08:32.
Original description (NVD)
Wazuh 4.14.3 before 4.14.8 and 4.10.4 contains a case-sensitivity mismatch between the ossec.conf validator and wazuh-logcollector that bypasses remote-command validation. Authenticated users with manager:update_config can inject an uppercase LOG_FORMAT command localfile that the collector runs as root on reload.
NVD references (4)
- https://github.com/wazuh/wazuh/releases/tag/v4.14.8
- https://github.com/wazuh/wazuh/security/advisories/GHSA-cjf8-wjx6-hjw6
- https://www.vulncheck.com/advisories/wazuh-4.14.3-before-4.14.8-remote-command-validation-bypass-via-case-mis…
- https://github.com/wazuh/wazuh/security/advisories/GHSA-cjf8-wjx6-hjw6
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
Affected? We can help.
We check whether your systems are affected, install updates and close the gap – continuously with the System Health Checker if you wish.