---
title: "CVE-2026-49869: Kestra: Unauthenticated Remote Code… | CubePath"
description: "Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in Kestra OSS uses…"
language: en
source: https://cubepath.com/security/cve/CVE-2026-49869
---

# CVE-2026-49869: Kestra: Unauthenticated Remote Code… | CubePath

## Description

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in Kestra OSS uses request.getPath().endsWith("/configs") to whitelist the public configuration endpoint from Basic Auth. Because the check is a suffix match rather than an exact path match, any API path whose last segment is configs bypasses authentication entirely. An unauthenticated remote attacker can exploit this to create and execute arbitrary workflows without credentials. Because Kestra ships with script execution plugins (plugin-script-shell, plugin-script-python, etc.) enabled by default, this directly results in unauthenticated Remote Code Execution as root inside the Kestra worker container. This vulnerability is fixed in 1.0.45 and 1.3.21.

Official description from the CVE record, published by GitHub\_M. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-49869)

## Key data

### CVSS 3.1 Critical 10.0

Score published by GitHub\_M in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

| Metric                 | Value   | What it means                                                                       |
| ---------------------- | ------- | ----------------------------------------------------------------------------------- |
| Attack vector          | Network | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity      | Low     | No special conditions are needed. The attack can be repeated at will.               |
| Privileges required    | None    | No account or privileges are needed.                                                |
| User interaction       | None    | No action from any user is needed.                                                  |
| Scope                  | Changed | The impact can reach other components beyond the vulnerable one.                    |
| Confidentiality impact | High    | Serious or total effect on the secrecy of data.                                     |
| Integrity impact       | High    | Serious or total effect on the trustworthiness of data.                             |
| Availability impact    | High    | Serious or total effect on availability.                                            |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.02095 (2.1% probability)

Percentile

81.8%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.

Name in the catalog

Kestra OSS OS Command Injection Vulnerability

Added to the catalog

Sep 2, 2026

Federal due date

Sep 5, 2026

### CISA assessment as of Sep 1, 2026

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation

Recorded by CISA as active

Automatable

yes

Technical impact

total

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-78](https://cwe.mitre.org/data/definitions/78.html) Improper Neutralization of Special Elements used in an OS Command
- [CWE-184](https://cwe.mitre.org/data/definitions/184.html) Incomplete List of Disallowed Inputs
- [CWE-287](https://cwe.mitre.org/data/definitions/287.html) Improper Authentication
- [CWE-918](https://cwe.mitre.org/data/definitions/918.html) Server-Side Request Forgery

## Affected products

Products listed in the CVE record, as the CNA published them.

- kestra-io kestra

  - affected: < 1.0.45
  - affected: >= 1.1.0, < 1.3.21

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [github.com/kestra-io/kestra/security/advisories/GHSA-5vc5-w…](https://github.com/kestra-io/kestra/security/advisories/GHSA-5vc5-wxxq-3fjx)

## Timeline

1. ID reserved Jun 1, 2026
2. Record published Jun 26, 2026
3. Added to CISA KEV Sep 2, 2026
4. Record last updated Sep 3, 2026

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:08 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)