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I. Basic Information for CVE-2026-31798
Vulnerability Information

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Vulnerability Title
JumpServer Improper Certificate Validation in Custom SMS API Client
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
证书验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
JumpServer 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
JumpServer是中国杭州飞致云信息科技(JumpServer)公司的一款开源堡垒机。 JumpServer v4.10.16-lts之前版本存在信任管理问题漏洞,该漏洞源于自定义短信API客户端证书验证不当,可能导致攻击者拦截请求并获取验证码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
jumpserverjumpserver < 4.10.16-lts -
II. Public POCs for CVE-2026-31798
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III. Intelligence Information for CVE-2026-31798
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IV. Related Vulnerabilities
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