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OpenSSH: OpenSSH: Arbitrary command execution via shell metacharacters in username

🗓️ 04 May 2026 10:05:43Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 9 Views

OpenSSH can execute commands via shell metacharacters in username when percent is non-default.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in OpenSSH affect AIX
28 May 202621:05
–ibm
IBM Security Bulletins		Security Bulletin: IBM i is Affected By Various Vulnerabilities in OpenSSH [CVE-2026-35385, CVE-2026-35386, CVE-2026-35387, CVE-2026-35388]
8 Jun 202620:09
–ibm
IBM Security Bulletins		Security Bulletin: IBM QRadar SIEM is vulnerable to using components with known vulnerabilities
25 May 202613:53
–ibm
ATTACKERKB		CVE-2026-35386
2 Apr 202616:44
–attackerkb
Tenable Nessus		Amazon Linux 2023 : openssh, openssh-clients, openssh-keycat (ALAS2023-2026-1745)
27 May 202600:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0102: openssh (ALINUX3-SA-2026:0102)
18 May 202600:00
–nessus
Tenable Nessus		AlmaLinux 10 : openssh (ALSA-2026:13380)
4 May 202600:00
–nessus
Tenable Nessus		AlmaLinux 9 : openssh (ALSA-2026:13381)
5 May 202600:00
–nessus
Tenable Nessus		AlmaLinux 8 : openssh (ALSA-2026:13383)
4 May 202600:00
–nessus
Tenable Nessus		Debian dla-4584 : openssh-client - security update
15 May 202600:00
–nessus
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.10aarch64openssh8.0p1-29.el8_10openssh-8.0p1-29.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64leopenssh8.0p1-29.el8_10openssh-8.0p1-29.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xopenssh8.0p1-29.el8_10openssh-8.0p1-29.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64openssh8.0p1-29.el8_10openssh-8.0p1-29.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10aarch64openssh-askpass8.0p1-29.el8_10openssh-askpass-8.0p1-29.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64leopenssh-askpass8.0p1-29.el8_10openssh-askpass-8.0p1-29.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xopenssh-askpass8.0p1-29.el8_10openssh-askpass-8.0p1-29.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64openssh-askpass8.0p1-29.el8_10openssh-askpass-8.0p1-29.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10aarch64openssh-askpass-debuginfo8.0p1-29.el8_10openssh-askpass-debuginfo-8.0p1-29.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64leopenssh-askpass-debuginfo8.0p1-29.el8_10openssh-askpass-debuginfo-8.0p1-29.el8_10.ppc64le.rpm
Rows per page

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09 Jul 2026 17:47Current
6Medium risk
Vulners AI Score6
CVSS 3.13.6 - 8.1
EPSS0.00247
SSVC
CWE-78
OpenSSHarbitrary command executionshell metacharactersusername vulnerabilityssh configuration percent
9