CVE-2026-31798

5.0 mediumEPSS 0.1%

Medium (5.0) in fit2cloud jumpserver. EPSS 0.1% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

5.0 medium

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

EPSS: 0.1% chance of exploitation in the next 30 days; higher than 0% of CVEs (scores of 2026-10-31)
CWE: CWE-295
Published: 2026-03-13
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

fit2cloud:jumpserver

References

https://github.com/jumpserver/jumpserver/security/advisories/GHSA-26pj-mmxw-w3w7

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