EUVD-2026-12081CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
Lifecycle Timeline
3Description
JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to v4.10.16-lts, JumpServer improperly validates certificates in the Custom SMS API Client. When JumpServer sends MFA/OTP codes via Custom SMS API, an attacker can intercept the request and capture the verification code BEFORE it reaches the user's phone. This vulnerability is fixed in v4.10.16-lts.
Analysis
JumpServer prior to version 4.10.16-lts improperly validates certificates when sending MFA/OTP codes through a Custom SMS API Client, allowing an attacker to intercept SMS verification requests and capture one-time passcodes before they reach the user's phone. This vulnerability affects organizations using JumpServer as a bastion host and operational security audit system, potentially enabling unauthorized authentication bypass. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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