Missing Authentication for Critical Function Affecting fluentd package, versions <1.19.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-RUBY-FLUENTD-17660642
- published27 Jun 2026
- disclosed26 Jun 2026
- crediteverping
Introduced: 26 Jun 2026
NewCVE-2026-44025 (opens in a new tab)How to fix?
Upgrade fluentd to version 1.19.3 or higher.
Overview
Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the in_monitor_agent process. An attacker can access sensitive internal instance variables, including credentials, by sending HTTP requests to the Monitor Agent API endpoints. The impact depends on network exposure and plugin configuration.
Workaround
This vulnerability can be mitigated by restricting access to the Monitor Agent port, binding it to localhost, and using firewall rules to block untrusted network access.