CVE-2026-104126
JumpServer is an open source bastion host and an operation and maintenance security audit system
- Risk score
- 42/100
- CVSS
- 6.0 v3.1
- Exploit chance (30 days)
- 0.4%
- Published
- 13 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to 4.10.17-lts, JumpServer's Ansible-based automation rendering can evaluate attacker-controlled template expressions from users who have permission to create or execute affected automation tasks. Crafted content ca…
- Affected
- See advisory
- Fix
- Upgrade the product to 4.10.17 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.0 medium
References
Original description
JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to 4.10.17-lts, JumpServer's Ansible-based automation rendering can evaluate attacker-controlled template expressions from users who have permission to create or execute affected automation tasks. Crafted content can invoke sensitive Ansible lookup behavior, including file, pipe, env, and password lookups, within the Ansible execution context, which can disclose files or environment values and may permit limited command execution under the privileges of the automation process. The issue does not provide unauthenticated access or direct access to unrelated JumpServer assets. This issue is fixed in version 4.10.17-lts.
Last activity 13 Oct 2026. Patch Forecast updates every hour.