Improper Restriction of Communication Channel to Intended Endpoints Affecting openssh-ldap-debuginfo package, versions <0:8.0p1-30.el8_10


Severity

Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.14% (3rd percentile)

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  • Snyk IDSNYK-ROCKY8-OPENSSHLDAPDEBUGINFO-18476902
  • published31 Jul 2026
  • disclosed23 Jun 2026

Introduced: 23 Jun 2026

CVE-2026-55655  (opens in a new tab)
CWE-923  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 openssh-ldap-debuginfo to version 0:8.0p1-30.el8_10 or higher.
This issue was patched in RLSA-2026:47755.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh-ldap-debuginfo package and not the openssh-ldap-debuginfo package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

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

CVSS Base Scores

version 3.1