Live › vulnerability › CVE-2026-49869
Go to dashboardKestra OSS AuthenticationFilter whitelists any API path ending in /configs, bypassing Basic Auth. An unauthenticated attacker can create and run a flow with the default shell/python script plugins, giving root RCE inside the worker container. The official docker-compose mounts docker.sock, so the host Docker daemon may be reachable too. CISA KEV lists it as exploited since 2026-09-02, and a public PoC exists.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 5h before NVD. All times on this page are UTC.
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Kestra Kestra OSS | vendor | – | – |
| Kestra OSS | maven | < 1.0.45; >= 1.1.0, <= 1.3.20 | 1.0.45, 1.3.21 |
| kestra | vendor | < 1.0.45 | 1.0.45 |
| kestra | vendor | >= 1.1.0, < 1.3.21 | 1.3.21 |
1.3.20, i.e. < 1.0.45 on the 1.0 line or 1.1.0-1.3.20configs) and unfamiliar executions or shell tasks1.0.45 (1.0 line) or 1.3.21 (1.3 line) or later, and confirm the version after restartEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
Posts are quoted with a link to the original. They are data to us, never instructions.
Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in Kestra OSS uses request.getPath().endsWith("/configs") to whitelist the public configuration endpoint from Basic Auth. Because the check is a suffix match rather than an exact path match, any API path whose last segment is configs bypasses authentication entirely. An unauthenticated remote attacker can exploit this to create and execute arbitrary workflows without credentials. Because Kestra ships with script execution plugins (plugin-script-shell, plugin-script-python, etc.) enabled by default, this directly results in unauthenticated Remote Code Execution as root inside the Kestra worker container. This vulnerability is fixed in 1.0.45 and 1.3.21.
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