A flaw was found in OpenSSH. A local unprivileged attacker on a Linux client host can hijack client-side X11 forwarding connections. This is possible by pre-binding the preferred abstract X socket name when X11 forwarding is enabled and a local UNIX-domain X socket is used. A successful attack can compromise the confidentiality of forwarded X11 traffic, including sensitive window contents and input, and may allow some manipulation of the forwarded session.
References
Configurations
Configuration 1 (hide)
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History
29 Oct 2026, 23:16
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26 Oct 2026, 04:17
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14 Oct 2026, 20:17
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14 Oct 2026, 07:17
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12 Oct 2026, 08:17
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07 Oct 2026, 03:16
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06 Oct 2026, 16:17
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Information
Published : 2026-06-23 04:17
Updated : 2026-10-30 08:16
NVD link : CVE-2026-55655
Mitre link : CVE-2026-55655
CVE.ORG link : CVE-2026-55655
JSON object : View
Products Affected
openbsd
- openssh
redhat
- enterprise_linux
CWE
CWE-923
Improper Restriction of Communication Channel to Intended Endpoints
