CVE-2026-61783 Wazuh: RBAC permission-effect check in mask_sensitive_config allows low-privilege users to read cluster.key
Low-privilege users can read sensitive cluster keys due to flawed RBAC logic that ignores deny rules when masking configuration values.
- 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-2026-61783?
CVE-2026-61783 is a high-severity missing authorization 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. In versions 4.14.0 through 4.14.6, an authenticated low-privilege user can read the cluster secret from the manager configuration because the logic that masks sensitive values is disabled by any update-config RBAC rule, including an explicit deny. The mask_sensitive_config() decorator applies masking only when _has_update_permissions() returns false, but that gate treats a user as able to update the config whenever a manager:update_config or cluster:update_config rule exists, without ever checking whether the rule's effect is allow or deny. Because a deny rule is stored as a real entry, a read-only account that is hardened by explicitly denying config edits is counted as having update permission, which turns masking off. A single authenticated GET request to the configuration endpoint with raw=true then returns the verbatim ossec.conf XML with cluster.key in clear, whereas an otherwise identical account without the deny rule sees the value masked. This issue is fixed in version 4.14.7.
Which versions are affected by CVE-2026-61783?
It affects 1 product.
Products include Wazuh Wazuh.
How do I fix CVE-2026-61783?
No fix has been published for CVE-2026-61783 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-61783 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-61783 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-vjcq-cf36-f5gx.