Security readout for executives and security teams
Plain-English summary
This flaw could let a malicious or compromised enrolled Wazuh agent alter SIEM data through the Wazuh Manager. The business risk is loss of trust in security monitoring: alerts, inventory, and documents could be deleted or manipulated. The source bundle does not show active exploitation.
Executive priority
Treat as urgent if any Wazuh 5.0.0 beta manager is deployed, because compromised monitoring data can hide incidents and disrupt response. Stable or other versions are not identified as affected in the provided sources.
Technical view
Wazuh Manager inventory_sync fails to escape DataValue.index when building OpenSearch bulk NDJSON. Agent-controlled input can inject additional bulk operations that the manager submits using admin privileges, enabling delete, index, or update actions against SIEM data.
Likely exposure
Exposure appears limited to Wazuh Manager 5.0.0 beta builds identified by the sources. The bundle says before 5.0.0-beta3, while affected data also names beta3, so version scope should be verified against vendor guidance.
Exploitation context
The described path depends on data controlled by an enrolled agent reaching inventory_sync. No KEV listing or cited source in the bundle supports active exploitation in the wild.
Researcher notes
The core issue is injection into newline-delimited OpenSearch bulk syntax through an unescaped index field. Evidence is strong on impact, but public bundle details are limited and affected-version wording is inconsistent. Avoid assuming broader Wazuh exposure without vendor confirmation.
Mitigation direction
- Check the Wazuh GitHub advisory for the corrected version and upgrade guidance.
- Identify any Wazuh Manager 5.0.0 beta deployments immediately.
- Restrict and review agent enrollment until affected managers are remediated.
- Review OpenSearch privileges used by Wazuh Manager for unnecessary administrative scope.
- Monitor for unexpected delete, index, or update operations from manager credentials.
Validation and detection
- Confirm exact Wazuh Manager versions across all environments.
- Review inventory_sync and OpenSearch bulk request logs for abnormal operations.
- Check whether agent-originated inventory data contains suspicious index field values.
- Compare recent alerts and inventory documents for unexplained deletion or tampering.
- Validate the enrolled agent list for unauthorized or unexpected agents.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-74: Exact CWE lookup
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Open ATT&CK lookupCVE-2026-56699 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 10 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H——VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H3.96VulnCheckVulnerability scoring details
Base CVSS 4.0 score
10CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- GitHub Security Advisory (GHSA-ff9g-85jq-r3g3)CVE reference, VulnCheck · vendor-advisory
- VulnCheck Advisory: Wazuh Manager - NDJSON Injection in inventory_sync via Agent-Controlled DataValue.indexCVE reference, VulnCheck · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.