CVE-2026-61800 affects Wazuh versions 4.4.0 through 4.14.6, an open-source XDR/SIEM platform. A party possessing the cluster key can write, overwrite, or delete arbitrary files under /var/ossec on worker nodes, enabling remote code execution as root. The flaw resides in the non-merged branch of update_master_files_in_worker(), which uses safe_join() to confine paths to /var/ossec but fails to verify files land in the directory declared by cluster_item_key. This allows an attacker to place files at chosen locations within /var/ossec, including executable paths run as root. The delete branch shares the same vulnerability. This is an incomplete fix for CVE-2026-30893, which previously addressed traversal outside /var/ossec but left intra-directory redirection unresolved. The vulnerability is fixed in Wazuh version 4.14.7.