# CVE-2026-73247 — kestra-io kestra

> As of 2026-08-11, CVE-2026-73247 is a HIGH-severity vulnerability in kestra-io kestra, CVSS v3.1 8.6. No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-73247 as of 2026-08-11; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-11

## What is 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.

The record classifies CVE-2026-73247 under weakness class [CWE-918](https://intel.threadlinqs.com/cwe/CWE-918). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 55 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 8.6 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N`)
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-11

## Is CVE-2026-73247 being exploited?

It currently carries a trending score of 30 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **kestra-io**: kestra

## How to fix CVE-2026-73247

No vendor patch reference has been recorded for CVE-2026-73247 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-73247

No threat campaign in the Threadlinqs corpus currently references CVE-2026-73247, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD. Last verified by Threadlinqs on 2026-08-13. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com](https://github.com/kestra-io/kestra/security/advisories/GHSA-r56g-q4p6-m3p6)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-73247
Full detection coverage and IOCs for threats exploiting CVE-2026-73247 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp