OpenBSD openssh vulnerabilities

Latest OpenBSD openssh CVEs

Newest publication first · page 1 of 6

1. CVE-2026-123158 sshd in OpenSSH before 10.6p2 on Linux, when musl libc is used without PAM, lacks a workaround for a password authentication bypass (related to misinterpretation of whether a string is intended to be...

   Published 2026-11-05

   High·CVSS 8.1 EPSS 18.9% CISA KEV added 2026-11-09 Exploited in the wild

   sshd in OpenSSH before 10.6p2 on Linux, when musl libc is used without PAM, lacks a workaround for a password authentication bypass (related to misinterpretation of whether a string is intended to be a password hash). For some configurations of accounts, any password between 256...

2. CVE-2026-106583 In ssh in OpenSSH before 10.6, a $ or \ character can occur in a command-line username, leading to injection.

   Published 2026-10-06

   High·CVSS 7.8 EPSS 0.15%

   In ssh in OpenSSH before 10.6, a $ or \ character can occur in a command-line username, leading to injection.

3. CVE-2026-106589 In sshd in OpenSSH through 10.6, in certain environments such as QNX 6 and SCO OpenServer 5, sshd-session can unexpectedly have root privileges. This is related to the GatewayPorts and StreamLocalForw...

   Published 2026-10-06

   Low·CVSS 2.9 EPSS 0.08%

   In sshd in OpenSSH through 10.6, in certain environments such as QNX 6 and SCO OpenServer 5, sshd-session can unexpectedly have root privileges. This is related to the GatewayPorts and StreamLocalForwarding configuration options, and lack of support for file-descriptor passing an...

4. CVE-2026-106588 openssh: OpenSSH: Loss of process sandboxing via macOS SDK builds

   Published 2026-10-06

   Low·CVSS 3.1 EPSS 0.13%

   In sshd in OpenSSH through 10.6, use of the macOS 27 (or later) SDK has the side effect of loss of sandboxing, which is potentially unexpected.

5. CVE-2026-106587 In sshd in OpenSSH before 10.6, the value "none" for a configuration option is sometimes interpreted as a filename but was intended to mean that a feature is disabled.

   Published 2026-10-06

   Low·CVSS 3.3 EPSS 0.08%

   In sshd in OpenSSH before 10.6, the value "none" for a configuration option is sometimes interpreted as a filename but was intended to mean that a feature is disabled.

6. CVE-2026-106586 In sshd in OpenSSH before 10.6, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not, a different vulnerability than CVE-2026-73283.

   Published 2026-10-06

   Medium·CVSS 4.3 EPSS 0.12%

   In sshd in OpenSSH before 10.6, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not, a different vulnerability than CVE-2026-73283.

7. CVE-2026-106585 In sshd and ssh in OpenSSH before 10.6, there is no check for whether the maximum packet length is exceeded during decompression of highly compressed data.

   Published 2026-10-06

   Medium·CVSS 6.5 EPSS 0.19%

   In sshd and ssh in OpenSSH before 10.6, there is no check for whether the maximum packet length is exceeded during decompression of highly compressed data.

8. CVE-2026-106584 In ssh-keygen in OpenSSH before 10.6, certificates could have incorrect expiration times because of Daylight Saving mishandling. There can be a slightly more severe effect on users in certain Antarcti...

   Published 2026-10-06

   Low·CVSS 3.3 EPSS 0.06%

   In ssh-keygen in OpenSSH before 10.6, certificates could have incorrect expiration times because of Daylight Saving mishandling. There can be a slightly more severe effect on users in certain Antarctic locations.

9. CVE-2026-106582 In sshd and ssh in OpenSSH before 10.6, an LZ77 dictionary coder can be used even though this is contraindicated by the arXiv 2609.07709 "Crossing the Streams" findings.

   Published 2026-10-06

   Low·CVSS 3.7 EPSS 0.18%

   In sshd and ssh in OpenSSH before 10.6, an LZ77 dictionary coder can be used even though this is contraindicated by the arXiv 2609.07709 "Crossing the Streams" findings.

10. CVE-2026-106555 In sshd in OpenSSH before 10.6, GSSAPIAuthentication authentication state can incorrectly be persisted across authentication attempts.

    Published 2026-10-06

    High·CVSS 7.5 EPSS 0.14%

    In sshd in OpenSSH before 10.6, GSSAPIAuthentication authentication state can incorrectly be persisted across authentication attempts.

11. CVE-2026-106553 In sshd in OpenSSH before 10.6, credentials can incorrectly persist after failure of a GSSAPIAuthentication authentication attempt.

    Published 2026-10-06

    High·CVSS 7.5 EPSS 0.14%

    In sshd in OpenSSH before 10.6, credentials can incorrectly persist after failure of a GSSAPIAuthentication authentication attempt.

12. CVE-2026-106552 In sftp in OpenSSH before 10.6, a server can trigger directory traversal (causing files to be written to unintended locations) during a recursive copy operation.

    Published 2026-10-06

    Medium·CVSS 6.5 EPSS 0.36%

    In sftp in OpenSSH before 10.6, a server can trigger directory traversal (causing files to be written to unintended locations) during a recursive copy operation.

13. CVE-2026-73283 In sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not.

    Published 2026-08-11

    Low·CVSS 2.5 EPSS 0.15%

    In sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not.

14. CVE-2026-73282 In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if a certain pair of remote-forwarding operations are concurrent.

    Published 2026-08-11

    Medium·CVSS 4.8 EPSS 0.16%

    In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if a certain pair of remote-forwarding operations are concurrent.

15. CVE-2026-73281 In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys. This is caused by misinteraction betw...

    Published 2026-08-11

    Low·CVSS 3.5 EPSS 0.16%

    In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys. This is caused by misinteraction between agent locking and the session-bind@openssh.com extension.

16. CVE-2026-60002 ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange. (This outcome occurs only on the client side.)

    Published 2026-07-08

    Critical·CVSS 9.4 EPSS 0.30%

    ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange. (This outcome occurs only on the client side.)

17. CVE-2026-60001 sshd in OpenSSH before 10.4 does not always honor the minimum authentication delay.

    Published 2026-07-08

    Medium·CVSS 6.5 EPSS 0.29%

    sshd in OpenSSH before 10.4 does not always honor the minimum authentication delay.

18. CVE-2026-60000 sshd in OpenSSH before 10.4 allows remote attackers to cause a denial of service (resource consumption from excessive authentication attempts) because MaxAuthTries was mishandled for GSSAPIAuthenticat...

    Published 2026-07-08

    High·CVSS 7.5 EPSS 0.62%

    sshd in OpenSSH before 10.4 allows remote attackers to cause a denial of service (resource consumption from excessive authentication attempts) because MaxAuthTries was mishandled for GSSAPIAuthentication.

19. CVE-2026-59999 In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.

    Published 2026-07-08

    High·CVSS 7.5 EPSS 0.16%

    In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.

20. CVE-2026-59998 sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory.

    Published 2026-07-08

    Medium·CVSS 6.5 EPSS 0.18%

    sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory.

21. CVE-2026-59997 internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended securi...

    Published 2026-07-08

    Medium·CVSS 5.4 EPSS 0.18%

    internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended security properties of an SFTP connection.

22. CVE-2026-59996 scp in OpenSSH before 10.4 may place a file in the parent directory of an intended directory when the copy occurs between two remote destinations.

    Published 2026-07-08

    Medium·CVSS 5.4 EPSS 0.25%

    scp in OpenSSH before 10.4 may place a file in the parent directory of an intended directory when the copy occurs between two remote destinations.

23. CVE-2026-59995 sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when "sftp server:/path ." is used with an attacker-controlled server.

    Published 2026-07-08

    Medium·CVSS 5.4 EPSS 0.25%

    sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when "sftp server:/path ." is used with an attacker-controlled server.

24. CVE-2026-55654 Openssh: heap out-of-bounds read in red hat enterprise linux versions of openssh gssapi indicator cleanup due to missing null sentinel termination

    Published 2026-06-23

    Low·CVSS 3.7 EPSS 0.65%

    A flaw was found in OpenSSH. This vulnerability, a heap out-of-bounds read, occurs during the cleanup of GSSAPI (Generic Security Service Application Programming Interface) indicators when a trailing NULL termination is missing in the auth-indicators array. A remote attacker, und...

25. CVE-2026-55655 Openssh: local mitm of x11 forwarding via abstract unix socket pre-binding in red hat enterprise linux openssh client versions

    Published 2026-06-23

    Medium·CVSS 6.1 EPSS 0.12%

    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 suc...

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.