CVE-2026-49869
Kestra OSS OS Command Injection Vulnerability
Beskrivelse
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.
Beskrivelsen gjengis slik kilden har publisert den, på engelsk.
Nøkkelfakta
- Publisert
- 2026-06-26
- Sist endret
- 2026-09-03
- Tildelt av
- security-advisories@github.com
- CVSS-vektor
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H- Scoret av
- security-advisories@github.com
- Sannsynlighet for utnyttelse
-
0.9 %
høyere enn 56 %
av alle kjente sårbarheter
EPSS, neste 30 dager, modell v2026.06.15 - Rettelse finnes
- Ikke registrert hos kildene
Aktivt utnyttet
CISA førte denne sårbarheten inn i katalogen over kjente utnyttede sårbarheter 2026-09-02, med utbedringsfrist 2026-09-05 for amerikanske føderale etater.
Pålagt tiltak: 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.
Berørte produkter
| Leverandør | Produkt | Versjoner | Status |
|---|---|---|---|
| Kestra | Kestra | < 1.0.45 | Berørt |
| Kestra | Kestra | ≥ 1.1.0, < 1.3.21 | Berørt |
Svakhetstype
-
CWE-184: Incomplete List of Disallowed Inputs
The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes p…
-
CWE-287: Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
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CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS …
-
CWE-918: Server-Side Request Forgery (SSRF)
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
Angrepsteknikker
Utledet gjennom svakhetstypen: CVE til CWE til CAPEC til ATT&CK. Dette viser hvilke teknikker svakhetsklassen historisk brukes til. Det er ikke en påstand om at nettopp denne sårbarheten er utnyttet slik.
- T1040: Network Sniffing
- T1134: Access Token Manipulation
- T1185: Browser Session Hijacking
- T1505.003: Web Shell
- T1548: Abuse Elevation Control Mechanism
- T1550.001: Application Access Token
- T1557: Adversary-in-the-Middle
- T1563: Remote Service Session Hijacking
Referanser
- https://github.com/kestra-io/kestra/security/advisories/GHSA-5vc5-wxxq-3fjx
- https://github.com/kestra-io/kestra/security/advisories/GHSA-5vc5-wxxq-3fjx
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-49869
Relatert hos Berigo
Artikler
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Nevner denne CVE-en
2026-09-03
CISA la 2. september 2026 syv nye sårbarheter inn i katalogen over kjente utnyttede sårbarheter. Tre av dem sitter i åpne komponenter som brukes i ut…
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