Detections
Analytics

Kestra < 1.3.21 Unauthenticated Remote Code Execution

critical Web App Scanning Plugin ID 115468

Synopsis

Kestra < 1.3.21 Unauthenticated Remote Code Execution

Description

According to its self-reported version number, the Kestra application running on the remote host is prior to 1.3.21. It is, therefore, affected by an Unauthenticated Remote Code Execution via Authentication Bypass in AuthenticationFilter.

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Kestra version 1.3.21 or later.

See Also

https://github.com/kestra-io/kestra/security/advisories/GHSA-5vc5-wxxq-3fjx

Plugin Details

Severity: Critical

ID: 115468

Type: Version Based

Published: 9/8/2026

Updated: 9/8/2026

Scan Template: basic, full, pci, scan

Risk Information

VPR

Risk Factor: Critical

Score: 9

Percentile: 99.75

CVSS v2

Risk Factor: Critical

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-49869

CVSS v3

Risk Factor: Critical

Base Score: 10

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS Score Source: CVE-2026-49869

Vulnerability Information

CPE: cpe:2.3:a:kestra:kestra:*:*:*:*:*:*:*:*

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 6/25/2026

CISA Known Exploited Vulnerability Due Dates: 9/5/2026

Reference Information

CVE: CVE-2026-49869

CWE: 184, 287, 78, 918

OWASP: 2010-A1, 2010-A3, 2010-A6, 2013-A1, 2013-A2, 2013-A5, 2013-A9, 2017-A1, 2017-A2, 2017-A6, 2017-A9, 2021-A10, 2021-A3, 2021-A5, 2021-A6, 2021-A7, 2025-A1, 2025-A5, 2025-A6, 2025-A7

WASC: Application Misconfiguration, Insufficient Authentication, OS Commanding

CAPEC: 108, 114, 115, 15, 151, 194, 22, 43, 57, 593, 6, 633, 650, 88, 94

DISA STIG: APSC-DV-000460, APSC-DV-002510, APSC-DV-002560, APSC-DV-002630

HIPAA: 164.306(a)(1), 164.306(a)(2), 164.312(a)(1), 164.312(a)(2)(i)

ISO: 27001-A.13.1.1, 27001-A.14.1.2, 27001-A.14.1.3, 27001-A.14.2.5, 27001-A.18.1.3, 27001-A.6.2.2, 27001-A.9.1.2, 27001-A.9.4.1, 27001-A.9.4.4, 27001-A.9.4.5

NIST: sp800_53-AC-3, sp800_53-CM-6b, sp800_53-SI-10

OWASP API: 2019-API7, 2019-API8, 2023-API7, 2023-API8

OWASP ASVS: 4.0.2-14.2.1, 4.0.2-5.2.6, 4.0.2-5.3.8

PCI-DSS: 3.2-6.2, 3.2-6.5.1, 3.2-6.5.10, 3.2-6.5.9