Vulnerability Details CVE-2026-31798
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 4.0%
CVSS Severity
CVSS v3 Score 5.0