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CVE-2026-68930— Russh: Channel-scoped server callbacks can be reached without an open channel

CVSS 6.5 · Medium EPSS 0.21% · P12

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProductVersion RangeStatus
Eugenyrussh< 0.62.5affected
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I. Basic Information for CVE-2026-68930

Vulnerability Information
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Vulnerability Title
Russh: Channel-scoped server callbacks can be reached without an open channel
Source: CVE Program / CVE List V5
Vulnerability Description
Russh is a Rust SSH client & server library. Prior to 0.62.5, russh dispatches channel-scoped Handler callbacks for recipient channel IDs that were never opened or confirmed in russh/src/server/encrypted.rs, server_read_authenticated, and the exec_request callback. Version 0.62.5 fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在生命周期错误阶段对资源进行操作
Source: CVE Program / CVE List V5
Vulnerability Title
Eugene Russh 处理逻辑错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Eugene Russh是Eugene个人开发者的一款SSH客户端库。 Eugene Russh 0.62.5之前版本存在安全漏洞，该漏洞源于在russh/src/server/encrypted.rs、server_read_authenticated和exec_request回调中，为从未打开或确认的接收者通道ID分发了通道范围的Handler回调，可能导致逻辑处理错误或未授权操作。
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
Eugenyrussh < 0.62.5 -

II. Public POCs for CVE-2026-68930

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III. Intelligence Information for CVE-2026-68930

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Patches & Fixes for CVE-2026-68930 (1)

Vendor Advisories for CVE-2026-68930 (1)

Vendor Pages for CVE-2026-68930 (1)

IV. Related Vulnerabilities

Same product: russh
Same vendor: Eugeny

V. Comments for CVE-2026-68930

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