Exploit for Authentication Bypass Using an Alternate Path or Channel in Kestra

Kestra Unauthenticated RCE Exploit CVE-2026-53576 !Pyth...

CVE-2026-55069

Kestra is an open-source, event-driven orchestration platform. Prior to 1.3.24, this vulnerability exists in the BasicAuth authentication component of the Kestra OSS workflow orchestration platform. An attacker who gains read access to the PostgreSQL database can exploit SHA-512's high computatio...

CVE-2026-49984

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.23, the local internal-storage backend validates user-supplied paths for .. traversal before it converts Windows-style backslashes to forward slashes. An attacker can therefore smuggle a traversal sequence past...

CVE-2026-53577

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the previewFileFromExecution endpoint GET /api/v1/tenant/executions/executionId/file/preview contains an access control bypass that allows any authenticated user to read output files from any other executio...

CVE-2026-49869

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...

CVE-2026-45807

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.43 and 1.3.19, several Kestra API endpoints accept a kestra:// URI from the client and pass it through StorageInterface.parentTraversalGuard before reading the underlying file from the local storage backend. The guard onl...

Directory Traversal

Overview Affected versions of this package are vulnerable to Directory Traversal via the StorageInterface.parentTraversalGuard function. An attacker can access arbitrary files on the host filesystem by submitting a specially crafted kestra:// URI containing URL-encoded directory traversal...

Command Injection

Overview Affected versions of this package are vulnerable to Command Injection due to improper path validation in the AuthenticationFilter process. An attacker can execute arbitrary code with root privileges inside the worker container by bypassing authentication and creating or running workflows...

CVE-2026-49869

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...

CVE-2026-49869 Kestra: Unauthenticated Remote Code Execution via Authentication Bypass in `AuthenticationFilter`

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...

CVE-2026-49869

Kestra OSS contains an unauthenticated RCE flaw in the AuthenticationFilter prior to versions 1.0.45 and 1.3.21. The whitelist uses a suffix check (request.getPath().endsWith("/configs")) to bypass Basic Auth, so any API path ending in configs bypasses authentication. An unauthenticated attacker ...

CVE-2026-49869 Kestra: Unauthenticated Remote Code Execution via Authentication Bypass in `AuthenticationFilter`

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...

CVE-2026-45807 Kestra: Path traversal via URL-encoded "%2E%2E" in execution and namespace file endpoints allows arbitrary file read

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.43 and 1.3.19, several Kestra API endpoints accept a kestra:// URI from the client and pass it through StorageInterface.parentTraversalGuard before reading the underlying file from the local storage backend. The guard onl...

CVE-2026-45807

Summary: Kestra prior to versions 1.0.43 and 1.3.19 is affected by a path-traversal vulnerability. Several API endpoints accept a kestra:// URI and pass it through StorageInterface.parentTraversalGuard, which only inspects the literal URI.toString(). An URL-encoded .. ("%2E%2E") can slip through,...

CVE-2026-45807

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.43 and 1.3.19, several Kestra API endpoints accept a kestra:// URI from the client and pass it through StorageInterface.parentTraversalGuard before reading the underlying file from the local storage backend. The guard onl...

CVE-2026-49984

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.23, the local internal-storage backend validates user-supplied paths for .. traversal before it converts Windows-style backslashes to forward slashes. An attacker can therefore smuggle a traversal sequence past...

CVE-2026-49984 Kestra: Path traversal in `LocalStorage` allows any authenticated user to read arbitrary server files via the execution file-download API (`\..\` bypasses the `..` guard)

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.23, the local internal-storage backend validates user-supplied paths for .. traversal before it converts Windows-style backslashes to forward slashes. An attacker can therefore smuggle a traversal sequence past...

CVE-2026-49984 Kestra: Path traversal in `LocalStorage` allows any authenticated user to read arbitrary server files via the execution file-download API (`\..\` bypasses the `..` guard)

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.23, the local internal-storage backend validates user-supplied paths for .. traversal before it converts Windows-style backslashes to forward slashes. An attacker can therefore smuggle a traversal sequence past...

CVE-2026-53576

Kestra prior to versions 1.0.45 and 1.3.21 contained an authentication filter bypass on the REST API. Requests whose path ends in /configs were treated as the public instance-config endpoint and forwarded without credential checks, allowing anonymous access to resources such as /api/v1/{tenant}/f...

CVE-2026-53576 Kestra: Unauthenticated RCE via /configs path-suffix auth-filter bypass

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the authentication filter for the REST API @Filter"/api/v1/" treats any request whose path ends in /configs as the public instance-config endpoint and forwards it without a credential check. kestra addresse...