CVE-2026-31798 MEDIUM

CVE-2026-31798: JumpServer Improper Certificate Validation in Custom SMS API Client

Vendor Jumpserver
Product jumpserver
Weakness CWE-295
Published March 13, 2026
Last update March 13, 2026
View on NVD All CVEs

CVSS base score

5.0/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 13, 2026 CVE published
March 13, 2026 Record updated