{"id":"CVE-2026-61800","title":"Wazuh is an open-source security platform providing unified XDR and SIEM protection for endpoints and cloud workloads","summary":"Wazuh is an open-source security platform providing unified XDR and SIEM protection for endpoints and cloud workloads. In versions 4.4.0 through 4.14.6, a party holding the cluster key can write, overwrite, or delete arbitrary files unde…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-22"],"vendor":"wazuh","product":"wazuh","affected":["wazuh >= 4.4.0, < 4.14.7"],"patched":["wazuh 4.14.7"],"published":"2026-08-28","updated":"2026-09-15","sourceUpdated":"2026-09-15T19:12:34.260","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-61800","references":[{"url":"https://github.com/wazuh/wazuh/commit/f7f7c4d2d9e683c5d42e997fe7028a3fb2578853","label":"security-advisories@github.com"},{"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-3jff-488g-335f","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00976,"epssPercentile":0.60591,"ingestedAt":"2026-09-08T21:11:12.286Z","slug":"CVE-2026-61800","body":"## Overview\n\nWazuh is an open-source security platform providing unified XDR and SIEM protection for endpoints and cloud workloads. In versions 4.4.0 through 4.14.6, a party holding the cluster key can write, overwrite, or delete arbitrary files under /var/ossec on worker nodes, leading to remote code execution as root. During cluster file synchronization, the non-merged branch of update_master_files_in_worker() moves each staged file to a destination derived only from safe_join(), which confines the path to /var/ossec but never verifies that the file lands in the directory declared by its cluster_item_key. Because the destination check present on the primary node and on the worker's merged branch was not applied, a peer can place files at attacker-chosen locations under /var/ossec, including paths that are executed as root, and the delete branch has the same gap. This is an incomplete fix for CVE-2026-30893, which addressed traversal outside /var/ossec but left this path able to redirect files anywhere within it. This issue is fixed in version 4.14.7.\n\n## Affected\n\n- `wazuh >= 4.4.0, < 4.14.7`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `wazuh 4.14.7`","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}