CVE-2026-48024
CVE-2026-48024 is a critical-severity vulnerability in Wazuh with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- EPSS exploit prediction: 1% (54th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-22
- Affected product: Wazuh
- Published:
- Last modified:
Description
Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.0.0 until 4.14.6 and 5.0.0-beta3, cluster.unmerge_info() in framework/wazuh/core/cluster/cluster.py constructs paths from peer-controlled merge_type and name values in a merged synchronization archive. process_files_from_worker() in framework/wazuh/core/cluster/master.py does not adequately confine the resulting path to the declared cluster item directory. A cluster peer holding the shared Fernet key can use traversal in files_metadata.json or a merged-file header to write files such as /var/ossec/etc/ossec.conf. Replacing ossec.conf can configure root-executed commands and lead to code execution when Wazuh services reload. This issue is fixed in versions 4.14.6 and 5.0.0-beta3.
Frequently asked questions
- What is CVE-2026-48024?
- Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.0.0 until 4.14.6 and 5.0.0-beta3, cluster.unmerge_info() in framework/wazuh/core/cluster/cluster.py constructs paths from peer-controlled merge_type and name values in a merged synchronization archive. process_files_from_worker() in framework/wazuh/core/cluster/master.py does not adequately confine the resulting path to the declared cluster item directory. A cluster peer holding the shared Fernet key can use traversal in files_metadata.json or a merged-file header to write files such as /var/ossec/etc/ossec.conf. Replacing ossec.conf can configure root-executed commands and lead to code execution when Wazuh services reload. This issue is fixed in versions 4.14.6 and 5.0.0-beta3.
- How severe is CVE-2026-48024?
- CVE-2026-48024 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-48024 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-48024?
- CVE-2026-48024 primarily affects Wazuh. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-48024?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2026-48024 published?
- CVE-2026-48024 was published on 2026-08-19 and last updated on 2026-09-15.
References
- https://github.com/wazuh/wazuh/commit/88fc89fdfb1bf37b9d826e9c281a3d22655733de
- https://github.com/wazuh/wazuh/pull/36204
- https://github.com/wazuh/wazuh/releases/tag/v4.14.6
- https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta3
- https://github.com/wazuh/wazuh/security/advisories/GHSA-gh4h-fx78-q8xc
Affected products (3)
- cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*
- cpe:2.3:a:wazuh:wazuh:5.0.0:beta1:*:*:*:*:*:*
- cpe:2.3:a:wazuh:wazuh:5.0.0:beta2:*:*:*:*:*:*
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