Kestra: Unauthenticated management/actuator endpoints exposed on port 8081 (/env, /loggers) bypass API basic-auth
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-306.
Summary
Kestra is an open-source, event-driven orchestration platform. Prior to 2.0.0-rc6, Kestra's cli/src/main/resources/application.yml serves Micronaut management endpoints on port 8081 without authentication even when Basic Auth protects /api/v1/** on port 8080, allowing unauthenticated GET /env requests to disclose resolved configuration and POST /loggers/{name} requests to change runtime log levels. This issue is fixed in 2.0.0-rc6.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Kestra | kestra | before 2.0.0-rc6 | 2.0.0-rc6 | Patch available | CNA |
| — | io.kestra:kestra (Maven) | before 2.0.0 | 2.0.0 | Patch available | GHSA-hpj9-grjp-7vc7 |
- kestra VendorKestra Affected before 2.0.0-rc6 Fixed in 2.0.0-rc6 Patch available CNA
- io.kestra:kestra (Maven) Vendor— Affected before 2.0.0 Fixed in 2.0.0 Patch available GHSA-hpj9-grjp-7vc7
Remediation
- Fix · CNA kestra (kestra-io) Fixed in 2.0.0-rc6
- Fix · GHSA-hpj9-grjp-7vc7 io.kestra:kestra (Maven) Fixed in 2.0.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-73245
- 2026-10-03 Alias added: GHSA-hpj9-grjp-7vc7
References
More Kestra vulnerabilities
- TI-2026-36769 Kestra: Unauthenticated Remote Code Execution via Authentication Bypass in `AuthenticationFilter` KEVCVSS 3.1CRITICAL 10.0
- TI-2026-38637 Kestra: Unauthenticated RCE via /configs path-suffix auth-filter bypass CVSS 3.1CRITICAL 10.0
- TI-2026-28138 Kestra v1.3.3 and before is vulnerable to SQL Injection. CVSS 3.1CRITICAL 9.8
- TI-2026-51384 Kestra: SSRF via Pebble http() function allows unauthenticated access to internal services & cloud metadata CVSS 3.1HIGH 8.6
- TI-2026-26858 Kestra: Remote Code Execution via SQL Injection CVSS 3.1CRITICAL 10.0
- TI-2026-39775 Kestra BasicAuth Password Stored as SHA-512 Enables Offline Brute-Force Attack CVSS 3.1HIGH 8.7
Sources
- CVE-2026-73245 · CVE Program
- CVE-2026-73245 · NVD
- FIRST EPSS
- GHSA-hpj9-grjp-7vc7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences