CVE-2026-56401

Description

Wazuh wazuh-modulesd before 5.0.0-beta3 contains a null pointer dereference vulnerability in inventory_sync FlatBuffer DataValue handling. An enrolled agent can send a verifier-valid DataValue message omitting the optional id field, causing wazuh-modulesd to crash when dereferencing data->id()->string_view() without null validation, resulting in denial of service.

References

• https://github.com/wazuh/wazuh/commit/3adf4f87942705aa0ceeba1e145c259cc9dcd242
• https://github.com/wazuh/wazuh/security/advisories/GHSA-6hxp-c9x3-qc7p
• https://www.vulncheck.com/advisories/wazuh-null-pointer-dereference-in-inventory-sync-datavalue-flatbuffer-handling
• https://github.com/wazuh/wazuh/security/advisories/GHSA-6hxp-c9x3-qc7p