CVE Watch25 de out. de 2026

CVE-2026-49869

Kestra OSS OS Command Injection Vulnerability

CVSS

10.0

Crítica

EPSS

2.1%

p82

KEV

SIM

2 de set. de 2026

Exploit Today

0-100

Publicado: 26 de jun. de 2026 · Última mod.: 25 de out. de 2026 · CWE-78 · CWE-184 · CWE-287

EPSS · 30d

2.1%EPSS · 30 dias2.1%

2026-10-082026-11-05

Ficha do catálogo KEV

Produto

Kestra / Kestra OSS

Vulnerabilidade

Kestra OSS OS Command Injection Vulnerability

Adicionado ao KEV

2 de set. de 2026

Corrigir até

5 de set. de 2026

Uso conhecido em ransomware

Não

Descrição resumida

Kestra OSS contains an OS command injection vulnerability that could allow an unauthenticated remote attacker to create and execute arbitrary workflows without credentials.

Ação necessária

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.

Notas

This vulnerability affects an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://github.com/kestra-io/kestra/security/advisories/GHSA-5vc5-wxxq-3fjx ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-49869

Descrição técnica

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.

Referências oficiais

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