CVE-2026-54083 Wazuh: Path traversal in ip-customblock active response allows arbitrary file creation and deletion
Attackers can create or delete arbitrary files as root via path traversal in the ip-customblock active response script, potentially compromising system integrity.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54083?
CVE-2026-54083 is a high-severity path traversal vulnerability in Wazuh Wazuh, published on 27 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Wazuh is an open-source security platform providing unified XDR and SIEM protection for endpoints and cloud workloads. The ip-customblock active response script contains a path traversal vulnerability that lets an attacker create or delete arbitrary files on the filesystem as root. The script builds a file path by concatenating the srcip field taken from alert JSON directly onto the fixed /ipblock/ base directory, without validating that the value is a well-formed IP address. Because the extraction routine returns the raw string unchecked, an attacker who can trigger alert-matching log events with a crafted srcip containing ../ sequences can escape the base directory. The block action opens the resulting path in append mode, creating an empty file at an arbitrary location, while the unblock action passes it to remove(), deleting an arbitrary file; since the active response daemon runs as root, this includes sensitive files such as system credentials and Wazuh configuration. Unlike the sibling scripts host-deny.c, default-firewall-drop.c, and firewalld-drop.c, which reject non-IP input via get_ip_version(), ip-customblock.c omits this validation. This issue is fixed in version 4.14.7.
Weakness: CWE-22
Which versions are affected by CVE-2026-54083?
It affects 1 product.
Products include Wazuh Wazuh.
How do I fix CVE-2026-54083?
No fix has been published for CVE-2026-54083 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-54083 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54083 exists.
Other vulnerabilities in Wazuh Wazuh
- CVE-2025-24016 Wazuh Server Deserialization of Untrusted Data
- CVE-2024-32038 Wazuh Analysis Engine Event Decoder Heap-based Buffer Overflow Remote Code Execution Vulnerability
- CVE-2021-44079 Command injection in n/a
- CVE-2024-1243 Remote code execution and local privilege escalation in Wazuh Windows agent via NetNTLMv2 hash theft
- CVE-2026-61800 Wazuh cluster worker file sync allows arbitrary file write under /var/ossec (incomplete fix for CVE-2026-30893)
Sources
Also known as GHSA-m4mf-qmhf-8vj6.