CVE-2026-31798
JumpServer Improper Certificate Validation in Custom SMS API Client
CVSS Score
5.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-295 |
| Vendor | jumpserver |
| Product | jumpserver |
| Published | Mar 13, 2026 |
| Last Updated | Mar 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Affected Versions
jumpserver / jumpserver
< 4.10.16-lts