{"id":"CVE-2026-73247","title":"Kestra is an open-source, event-driven orchestration platform","summary":"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 s…","severity":"high","cvss":8.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","cwe":["CWE-918"],"published":"2026-08-11","updated":"2026-09-09","sourceUpdated":"2026-09-09T20:50:00.950","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73247","references":[{"url":"https://github.com/kestra-io/kestra/security/advisories/GHSA-r56g-q4p6-m3p6","label":"security-advisories@github.com"},{"url":"https://github.com/kestra-io/kestra/security/advisories/GHSA-r56g-q4p6-m3p6","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73247"},{"url":"https://github.com/advisories/GHSA-r56g-q4p6-m3p6"}],"tags":["nvd","ghsa","maven"],"epss":0.00368,"epssPercentile":0.30524,"ingestedAt":"2026-09-09T21:22:45.530Z","aliases":["GHSA-r56g-q4p6-m3p6"],"ecosystem":"maven","vendor":"kestra","product":"io.kestra:core","affected":["io.kestra:core <= 1.3.31","io.kestra:kestra-core < 2.0.0"],"patched":["io.kestra:kestra-core 2.0.0"],"slug":"CVE-2026-73247","body":"## Overview\n\nKestra 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-73247)\n\nAffected packages:\n\n- `io.kestra:core <= 1.3.31`\n- `io.kestra:kestra-core < 2.0.0`\n\nPatched in:\n\n- `io.kestra:kestra-core 2.0.0`\n\nSource: https://github.com/advisories/GHSA-r56g-q4p6-m3p6","depth":"twilight","depthScore":47,"depthScoreParts":{"impact":47.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}