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CVE-2026-31798

JumpServer Improper Certificate Validation in Custom SMS API Client

Published: Mar 13, 2026Updated: Mar 18, 2026 Sources: CVE List NVDCWE-295
NVD MITRE
5.0CVSSMEDIUM
EPSS Score
0.1%
Top 99.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:RS:UC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-295

Affected Products

jumpserverjumpserver
Mixed
Security Products / identity-access-mgmt
jumpserverfit2cloud
SaaSWeb App
Cloud & SaaS
jumpserveross-projectSecurity Productsaka jumpserver.org, jumpserver
fit2cloudcommercialCloud & SaaSaka jumpserver, 1panel, cloudexplorer lite

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

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

Timeline

Published
Mar 13, 2026
Last Updated
Mar 18, 2026

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