PT-2026-29835 · Openbsd+4 · Openssh+4

Rabbit · Published 2026-04-02 · Updated 2026-05-28 · CVE-2026-35388

Positive Technologies (AI Summary)

CVSS v3.1

2.5

Low

Base vector

AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions OpenSSH versions prior to 10.3

Description OpenSSH versions before 10.3 do not confirm connection multiplexing in proxy-mode multiplexing sessions.

Recommendations Update to version 10.3 or later.

Fix

Weakness Enumeration

CWE-420

Related Identifiers

ALSA-2026:13380

ALSA-2026:13381

ALSA-2026:13383

ALSA-2026:19069

ALSA-2026:19219

CVE-2026-35388

ECHO-15A9-2872-255F

JLSEC-2026-77

OESA-2026-1963

RHSA-2026:12389

RHSA-2026:13380

RHSA-2026:13381

RHSA-2026:13383

USN-8222-1

Affected Products

Ibm Aix

Linuxmint

Openssh

Rocky Linux

Ubuntu

References · 56

• https://osv.dev/vulnerability/ALSA-2026:13381 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2026-13383.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-35388 · Security Note
• https://linux.oracle.com/errata/ELSA-2026-13381.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-35388 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2026:19219 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8222-1 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2026:13383 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-35387 · Security Note
• https://errata.almalinux.org/9/ALSA-2026-19219.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-35414 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-35385 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-35388 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2026:13383 · Vendor Advisory
• https://errata.almalinux.org/8/ALSA-2026-13383.html · Vendor Advisory