PatchSiren cyber security CVE debrief
CVE-2026-44025 fluent CVE debrief
Fluentd's Monitor Agent plugin in_monitor_agent exposes internal metrics and plugin information via a REST API. Prior to version 1.19.3, responses from /api/plugins.json and related endpoints unintentionally include internal instance variables that may contain database passwords, API keys, or cloud credentials. This issue is fixed in version 1.19.3. The vulnerability has a high CVSS score of 7.5, indicating a significant risk to affected systems. Users and administrators should take immediate action to update affected systems and review configurations to prevent exposure of sensitive information.
- Vendor
- fluent
- Product
- fluentd
- CVSS
- HIGH 7.5
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-07-08
- Original CVE updated
- 2026-07-10
- Advisory published
- 2026-07-08
- Advisory updated
- 2026-07-10
Who should care
Users of Fluentd Monitor Agent plugin versions prior to 1.19.3 should update to the latest version to prevent exposure of sensitive information. This includes administrators and security teams responsible for maintaining and securing systems that utilize Fluentd for log collection and processing. Additionally, operators and platform teams should review configurations to ensure that sensitive information is not inadvertently exposed through the plugin's API endpoints.
Technical summary
The Fluentd Monitor Agent plugin in_monitor_agent exposes internal metrics and plugin information via a REST API. Prior to version 1.19.3, the plugin unintentionally includes internal instance variables in responses from /api/plugins.json and related endpoints. These internal variables may contain sensitive information such as database passwords, API keys, or cloud credentials. An attacker could potentially exploit this vulnerability to gain access to sensitive information. The issue has been fixed in version 1.19.3. Users should update to the latest version to prevent exposure of sensitive information.
Defensive priority
High
Recommended defensive actions
- Update Fluentd Monitor Agent plugin to version 1.19.3 or later
- Review and update configurations to ensure sensitive information is not exposed
- Monitor API endpoints for suspicious activity
- Implement compensating controls to protect sensitive information
- Review relevant monitoring, detection, and logs for exposed assets that need extra review
- Track exceptions, retest remediated assets, and close the item only after evidence is documented
- Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
Evidence notes
The CVE record was published on 2026-07-08T22:17:14.473Z and was last modified on 2026-07-10T19:01:51.670Z. The NVD entry is currently Undergoing Analysis. This information is based on the provided source corpus and may be subject to change as more information becomes available. Users should verify the status of the CVE and the affected products to ensure accurate understanding of the vulnerability.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-08T22:17:14.473Z and has not been modified since then. The NVD entry is currently Undergoing Analysis.