Red Hat Security Advisory: openssh security update

Fixed packages 6

Vulnerabilities 6

• High 7.5
  CVE-2026-35385

  In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to some users' …

  OpenBSD OpenSSH openssh openssh Debian Ubuntu Azure Linux Alpine
  Apr 2, 2026
• Medium 6.5
  CVE-2023-51385 Public exploit EPSS 20%

  In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host name has shell metacharacters, an…

  openssh openssh openssh-ssh1 openssh Debian Ubuntu Azure Linux Alpine
  Dec 18, 2023
• Medium 4.2
  CVE-2026-35414 Public exploit

  OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list …

  OpenBSD OpenSSH openssh openssh Debian Ubuntu Azure Linux
  Apr 2, 2026
• Low 3.6
  CVE-2026-35386

  In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This …

  OpenBSD OpenSSH openssh openssh Debian Ubuntu Azure Linux
  Apr 2, 2026
• Low 3.1
  CVE-2026-35387

  OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or …

  OpenBSD OpenSSH openssh openssh Debian Ubuntu Azure Linux
  Apr 2, 2026
• Low 2.5
  CVE-2026-35388

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

  OpenBSD OpenSSH openssh openssh Debian Ubuntu Azure Linux
  Apr 2, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2255271
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2454469
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2454490
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2454494
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2454500
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2454506
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_22329.json
• report
  https://access.redhat.com/security/cve/CVE-2023-51385
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-51385
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-51385
• report
  https://access.redhat.com/security/cve/CVE-2026-35385
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-35385
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-35385
• article
  https://marc.info/?l=openssh-unix-dev&m=177513443901484&w=2
• article
  https://www.openssh.org/releasenotes.html#10.3p1
• article
  https://www.openwall.com/lists/oss-security/2026/04/02/3
• report
  https://access.redhat.com/security/cve/CVE-2026-35386
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-35386
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-35386
• report
  https://access.redhat.com/security/cve/CVE-2026-35387
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-35387
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-35387
• report
  https://access.redhat.com/security/cve/CVE-2026-35388
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-35388
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-35388
• report
  https://access.redhat.com/security/cve/CVE-2026-35414
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-35414
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-35414