Kestra: Unauthenticated Remote Code Execution via Authentication Bypass in `AuthenticationFilter` (kestra-io kestra)
En bref
- Source
- NVD
- EPSS
- EPSS 2.10 % · centile 82 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- GitHub_M
- Statut NVD
- Analyzed
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.
Faiblesses (CWE)
- CWE-78 — Injection de commande système
- CWE-184 — Liste d'entrées interdites incomplète
- CWE-287 — Authentification incorrecte
- CWE-918 — Falsification de requête côté serveur (SSRF)
Références
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H | GitHub_M |
| CVSS 3.1 | CRITICAL 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H | NVD · security-advisories@github.com (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-39922
- GCVE · GCVE-0-2026-49869
Configurations affectées (CPE NVD)
cpe:2.3:a:kestra:kestra:*:*:*:*:*:*:*:*< 1.0.45cpe:2.3:a:kestra:kestra:*:*:*:*:*:*:*:*≥ 1.1.0 < 1.3.21
Produits affectés
| Produit | Versions |
|---|---|
| kestra-io · kestra | affected < 1.0.45 ; affected >= 1.1.0, < 1.3.21 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| CISA Known Exploited Vulnerabilities | CC0 1.0 |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |