CVE-2026-73247

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.

CVSS v3 8.6 HIGH

8.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/kestra-io/kestra/security/advisories/GHSA-r56g-q4p6-m3p6
https://github.com/kestra-io/kestra/security/advisories/GHSA-r56g-q4p6-m3p6

Configurations

No configuration.

History

23 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Kestra es una plataforma de orquestación de código abierto y basada en eventos. Antes de la versión 2.0.0, el archivo core/src/main/java/io/kestra/core/runners/pebble/functions/HttpFunction.java de Kestra pasa el argumento uri de http() controlado por el usuario a URI.create() y al cliente HTTP del lado del servidor sin restringir destinos privados, de bucle invertido o de enlace local, lo que permite a un atacante no autenticado importar y ejecutar un flujo que accede a servicios internos o metadatos de la nube.

Information

Published : 2026-08-11 22:19

Updated : 2026-10-24 15:10

NVD link : CVE-2026-73247

Mitre link : CVE-2026-73247

CVE.ORG link : CVE-2026-73247

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

{"id": "CVE-2026-73247", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-73247", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-13T13:22:52.239035Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.6, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 4.0, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "kestra-io", "product": "kestra", "versions": [{"status": "affected", "version": "< 2.0.0"}]}]}], "published": "2026-08-11T22:19:05.417", "references": [{"url": "https://github.com/kestra-io/kestra/security/advisories/GHSA-r56g-q4p6-m3p6", "source": "security-advisories@github.com"}, {"url": "https://github.com/kestra-io/kestra/security/advisories/GHSA-r56g-q4p6-m3p6", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-918"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Kestra es una plataforma de orquestaci\u00f3n de c\u00f3digo abierto y basada en eventos. Antes de la versi\u00f3n 2.0.0, el archivo core/src/main/java/io/kestra/core/runners/pebble/functions/HttpFunction.java de Kestra pasa el argumento uri de http() controlado por el usuario a URI.create() y al cliente HTTP del lado del servidor sin restringir destinos privados, de bucle invertido o de enlace local, lo que permite a un atacante no autenticado importar y ejecutar un flujo que accede a servicios internos o metadatos de la nube."}], "lastModified": "2026-10-24T15:10:00.190", "sourceIdentifier": "security-advisories@github.com"}