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CVE-2026-61800— Wazuh cluster worker file sync allows arbitrary file write under /var/ossec (incomplete fix for CVE-2026-30893)

Quick assessment

Affected
wazuh wazuh
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Wazuh是美国Wazuh公司开源的一款安全检测与威胁分析平台。 Wazuh 4.4.0版本至4.14.6版本存在路径遍历漏洞，该漏洞源于集群文件同步期间未验证文件目标路径，可能导致持有集群密钥的攻击者在/var/ossec目录下写入、覆盖或删除任意文件，导致远程代码执行。

CVSS 9.1 · Critical EPSS 0.98% · P61

Possible ATT&CK Techniques 2 AI

T1562 T1190.002

Affected Version Matrix 1

VendorProduct Version RangeStatus
wazuh wazuh >= 4.4.0, < 4.14.7 affected
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I. Basic Information for CVE-2026-61800

Vulnerability Information
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Vulnerability Title
Wazuh cluster worker file sync allows arbitrary file write under /var/ossec (incomplete fix for CVE-2026-30893)
Source: CVE Program / CVE List V5
Vulnerability Description
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 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Wazuh 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wazuh是美国Wazuh公司开源的一款安全检测与威胁分析平台。 Wazuh 4.4.0版本至4.14.6版本存在路径遍历漏洞，该漏洞源于集群文件同步期间未验证文件目标路径，可能导致持有集群密钥的攻击者在/var/ossec目录下写入、覆盖或删除任意文件，导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
wazuh wazuh >= 4.4.0, < 4.14.7 -

II. Public POCs for CVE-2026-61800

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III. Intelligence Information for CVE-2026-61800

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Patches & Fixes for CVE-2026-61800 (1)

Vendor Advisories for CVE-2026-61800 (1)

Same Patch Batch · wazuh · 2026-08-27 · 6 CVEs total

CVE-2026-54083 8.1 HIGH Wazuh: Path traversal in ip-customblock active response allows arbitrary file creation and
CVE-2026-54085 7.1 HIGH Wazuh: Missing input validation in multiple active response scripts allows argument inject
CVE-2026-61783 7.0 HIGH Wazuh: RBAC permission-effect check in mask_sensitive_config allows low-privilege users to
CVE-2026-61802 6.5 MEDIUM Wazuh discloses cleartext cluster key to low-privilege API users via GET /cluster/local/co
CVE-2026-54084 5.3 MEDIUM Wazuh agent enrollment NULL pointer dereference via malformed manager response

IV. Related Vulnerabilities

Same product: wazuh
Same vendor: wazuh
Same weakness: CWE-22

V. Comments for CVE-2026-61800

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