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CVE-2026-91166— Warpgate: Web SSH stores a jump host's key against the target's address, so it validates as the target

一分钟漏洞结论

影响对象
warp-tech warpgate
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux. From 0.25.0 until 0.27.6, the browser SSH path in warpgate-web-ssh/src/manager.rs handles RCEvent::HostKeyUnknown without the presenting hop identity and instead passes ssh_options.host an

CVSS 5.7 · Medium EPSS 0.17% · P7
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一、 漏洞 CVE-2026-91166 基础信息

漏洞信息

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Vulnerability Title
Warpgate: Web SSH stores a jump host's key against the target's address, so it validates as the target
来源: CVE Program / CVE List V5
Vulnerability Description
Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux. From 0.25.0 until 0.27.6, the browser SSH path in warpgate-web-ssh/src/manager.rs handles RCEvent::HostKeyUnknown without the presenting hop identity and instead passes ssh_options.host and ssh_options.port for the final target to KnownHosts::trust. In Prompt and AutoAccept modes, a jump host key can therefore be stored for the target address. A machine later presenting the jump host key at the target address can be accepted as the target, allowing interception of user traffic and a newly issued certificate when certificate authentication is used. The native SSH path is unaffected because it tracks each hop separately. This issue is fixed in version 0.27.6.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
对宿主不匹配的证书验证不恰当
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
warp-tech warpgate >= 0.25.0, < 0.27.6 -

二、漏洞 CVE-2026-91166 的公开POC

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三、漏洞 CVE-2026-91166 的情报信息

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CVE-2026-91166 补丁与修复 (1)

CVE-2026-91166 其他参考 (2)

同批安全公告 · warp-tech · 2026-09-21 · 共 7 条

CVE-2026-58491 9.3 CRITICAL Warpgate: Reflected XSS in SSO return endpoint via attacker-controlled next parameter
CVE-2026-63330 7.7 HIGH Warpgate: Missing Admin Authorization on Live Recording Stream WebSocket Allows Any Authen
CVE-2026-91167 6.0 MEDIUM Warpgate: Missing authorization check on `PUT /users/:id/roles/:role_id` allows any admin
CVE-2026-63329 4.9 MEDIUM Warpgate: x-warpgate-username Header Not Stripped from Client Requests Enables Identity Sp
CVE-2026-91164 4.3 MEDIUM Warpgate: API tokens bypass the user's allowed_ip_ranges restriction
CVE-2026-91165 2.4 LOW Warpgate: Markup injection in SSO form_post return page via unencoded redirect/error value

IV. Related Vulnerabilities

Same product: warpgate
Same vendor: warp-tech
Same weakness: CWE-297

V. Comments for CVE-2026-91166

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