Service interruption via agent-name path traversal
Published Aug 18, 2026 · Updated Aug 19, 2026
Path traversal in agent enrollment in Wazuh manager before 4.14.6 allows remote attackers to interrupt service via crafted agent names. The OS_IsValidName() check in src/addagent/validate.c accepts leading-dot and dot-sequence names, and delete_diff() later concatenates that untrusted name into a queue path so ".." resolves outside the intended diff directory and deletes parent queue subdirectories. Reachability requires access to the enrollment port and subsequent deletion of the malicious agent by an administrator; the result is a manager outage that requires manual recovery.
Summary
What happened
Path traversal in agent enrollment in Wazuh manager before 4.14.6 allows remote attackers to interrupt service via crafted agent names. The OS_IsValidName() check in src/addagent/validate.c accepts leading-dot and dot-sequence names, and delete_diff() later concatenates that untrusted name into a queue path so ".." resolves outside the intended diff directory and deletes parent queue subdirectories. Reachability requires access to the enrollment port and subsequent deletion of the malicious agent by an administrator; the result is a manager outage that requires manual recovery.
The record
- CVE
- CVE-2026-74038
- Published
- Aug 18, 2026
- Updated
- Aug 19, 2026
- Vendor
- Wazuh
- Product
- Wazuh manager
- Classifications
- CWE-22, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 18, 2026CVE publishedPublication date reported by the CVE source.
- Aug 19, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=4.0.0 <4.14.6
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- PoC script and video for agent-name path traversalproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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