CVE-2026-49869

Katalog CVE

CVSS 10.0 · Critical KEV · sudah dieksploitasi EPSS 2,1%

Kerentanan Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') pada kestra. Skor CVSS 3.1 10.0 (Critical) menurut github.com. Masuk katalog KEV CISA pada 2 September 2026, artinya sudah terbukti dieksploitasi.

Deskripsi (NVD)

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.

Advisory KUTIM-CSIRT

• Peringatan Keamanan: Rekapitulasi Kerentanan yang Dieksploitasi Aktif (KEV CISA) Periode 15 Agustus sampai 30 September 2026 30 Sep 2026

Rincian

Terbit di NVD

26 Juni 2026

Terakhir diubah

3 September 2026

Status NVD

Analyzed

CVSS 3.1

10.0 (Critical), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-184: Incomplete List of Disallowed Inputs
CWE-287: Improper Authentication
CWE-918: Server-Side Request Forgery (SSRF)

EPSS (30 hari)

2,1% peluang dieksploitasi; lebih tinggi dari 81,1% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama

Kestra OSS OS Command Injection Vulnerability

Masuk KEV

2 September 2026

Tenggat CISA

5 September 2026 (untuk instansi federal AS)

Ransomware

Belum tercatat

Tindakan wajib

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/kestra-io/kestra/security/advisories/GHSA-5vc5-wxxq-3fjx exploit · advisory vendor
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-49869 pemerintah AS