Kestra is an open-source, event-driven orchestration platform. Prior to 2.0.0, Kestra's core/src/main/java/io/kestra/core/runners/pebble/functions/HttpFunction.java passes the user-controlled http() uri argument to URI.create() and the server-side HTTP client without restricting private, loopback, or link-local destinations, allowing an unauthenticated attacker to import and execute a flow that accesses internal services or cloud metadata.
History

Thu, 13 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 12 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
First Time appeared Kestra-io
Kestra-io kestra
Vendors & Products Kestra-io
Kestra-io kestra

Tue, 11 Aug 2026 22:15:00 +0000

Type Values Removed Values Added
Description Kestra is an open-source, event-driven orchestration platform. Prior to 2.0.0, Kestra's core/src/main/java/io/kestra/core/runners/pebble/functions/HttpFunction.java passes the user-controlled http() uri argument to URI.create() and the server-side HTTP client without restricting private, loopback, or link-local destinations, allowing an unauthenticated attacker to import and execute a flow that accesses internal services or cloud metadata.
Title Kestra: SSRF via Pebble http() function allows unauthenticated access to internal services & cloud metadata
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-08-11T21:50:21.039Z

Updated: 2026-08-13T14:07:24.161Z

Reserved: 2026-08-11T17:18:01.597Z

Link: CVE-2026-73247

cve-icon Vulnrichment

Updated: 2026-08-13T13:23:28.144Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-11T22:19:05.417

Modified: 2026-09-09T20:50:00.950

Link: CVE-2026-73247

cve-icon Redhat

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