CVE-2026-73247 — Kestra: SSRF via Pebble http() function allows unauthenticated access to internal services & cloud metadata
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 u…
Published: 2026-08-11 · CVSS: 8.6 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7