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Description

OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.

PUBLISHED Reserved 2026-04-02 | Published 2026-04-02 | Updated 2026-04-02 | Assigner mitre




LOW: 2.5CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Problem types

CWE-420 Unprotected Alternate Channel

Product status

Default status
unaffected

Any version before 10.3
affected

References

www.openssh.org/releasenotes.html

marc.info/?l=openssh-unix-dev&m=177513443901484&w=2

www.openwall.com/lists/oss-security/2026/04/02/3

cve.org (CVE-2026-35388)

nvd.nist.gov (CVE-2026-35388)

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