Path traversal in OpenBSD OpenSSH
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Partial Red Hat: 18 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA OpenSSH (OpenBSD) Fixed in 10.4
Red Hat 47 advisories
- RHSA-2026:91232 Released 2026-10-27 · Red Hat rating CriticalRed Hat AI Base Images 3.0.7 (CPU)
- Red Hat OpenShift AI 3.0 registry.redhat.io/rhai/base-image-cpu-rhel9
- RHSA-2026:89739 Released 2026-10-26 · Red Hat rating Importantopenssh security update
- Red Hat Enterprise Linux AppStream E4S (v.9.2) openssh-askpass-8.7p1-30.el9_2.13, pam_ssh_agent_auth-0.10.4-5.30.el9_2.13
- Red Hat Enterprise Linux BaseOS E4S (v.9.2) openssh-8.7p1-30.el9_2.13, openssh-clients-8.7p1-30.el9_2.13, openssh-keycat-8.7p1-30.el9_2.13 +1
- RHSA-2026:82923 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.2.5 (ROCm 7.0)
- Red Hat OpenShift AI 3.2 registry.redhat.io/rhai/base-image-rocm-rhel9
Show 44 more Red Hat advisories
- RHSA-2026:82922 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.2.5 (ROCm 6.4)
- Red Hat OpenShift AI 3.2 registry.redhat.io/rhai/base-image-rocm-rhel9
- RHSA-2026:82921 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.2.5 (CUDA 12.9)
- Red Hat OpenShift AI 3.2 registry.redhat.io/rhai/base-image-cuda-rhel9
- RHSA-2026:82920 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.2.5 (TPU)
- Red Hat OpenShift AI 3.2 registry.redhat.io/rhai/base-image-tpu-rhel9
- RHSA-2026:82918 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.5.4 (CUDA 12.9)
- Red Hat OpenShift AI 3.5 registry.redhat.io/rhai/base-image-cuda-12.9-rhel9
- RHSA-2026:82917 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.3.6 (Spyre)
- Red Hat OpenShift AI 3.3 registry.redhat.io/rhai/base-image-spyre-rhel9
- RHSA-2026:82916 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.5.4 (CUDA 13.0)
- Red Hat OpenShift AI 3.5 registry.redhat.io/rhai/base-image-cuda-13.0-rhel9
- RHSA-2026:82915 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.5.4 (Rubin)
- Red Hat OpenShift AI 3.5 registry.redhat.io/rhai/base-image-rubin-rhel9
- RHSA-2026:82914 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.0.6 (ROCm)
- Red Hat OpenShift AI 3.0 registry.redhat.io/rhai/base-image-rocm-rhel9
- RHSA-2026:82913 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.3.6 (CUDA 13.0)
- Red Hat OpenShift AI 3.3 registry.redhat.io/rhai/base-image-cuda-13.0-rhel9
- RHSA-2026:82912 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.5.4 (TPU)
- Red Hat OpenShift AI 3.5 registry.redhat.io/rhai/base-image-tpu-rhel9
- RHSA-2026:82910 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.5.4 (ROCm 7.14)
- Red Hat OpenShift AI 3.5 registry.redhat.io/rhai/base-image-rocm-7.14-rhel9
- RHSA-2026:82909 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.5.4 (Neuron)
- Red Hat OpenShift AI 3.5 registry.redhat.io/rhai/base-image-neuron-rhel9
- RHSA-2026:82908 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.5.4 (CPU)
- Red Hat OpenShift AI 3.5 registry.redhat.io/rhai/base-image-cpu-rhel9
- RHSA-2026:82907 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.3.6 (Neuron)
- Red Hat OpenShift AI 3.3 registry.redhat.io/rhai/base-image-neuron-rhel9
- RHSA-2026:82904 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.0.6 (TPU)
- Red Hat OpenShift AI 3.0 registry.redhat.io/rhai/base-image-tpu-rhel9
- RHSA-2026:82903 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.0.6 (Spyre)
- Red Hat OpenShift AI 3.0 registry.redhat.io/rhai/base-image-spyre-rhel9
- RHSA-2026:82902 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.3.6 (CPU)
- Red Hat OpenShift AI 3.3 registry.redhat.io/rhai/base-image-cpu-rhel9
- RHSA-2026:82901 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.4.5 (CUDA 13.0)
- Red Hat OpenShift AI 3.4 registry.redhat.io/rhai/base-image-cuda-13.0-rhel9
- RHSA-2026:82900 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.4.5 (TPU)
- Red Hat OpenShift AI 3.4 registry.redhat.io/rhai/base-image-tpu-rhel9
- RHSA-2026:82899 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.4.5 (Gaudi)
- Red Hat OpenShift AI 3.4 registry.redhat.io/rhai/base-image-gaudi-rhel9
- RHSA-2026:82898 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.4.5 (ROCm 7.1)
- Red Hat OpenShift AI 3.4 registry.redhat.io/rhai/base-image-rocm-7.1-rhel9
- RHSA-2026:82897 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.4.5 (Spyre)
- Red Hat OpenShift AI 3.4 registry.redhat.io/rhai/base-image-spyre-rhel9
- RHSA-2026:82763 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.5.4 (Gaudi)
- Red Hat OpenShift AI 3.5 registry.redhat.io/rhai/base-image-gaudi-rhel9
- RHSA-2026:82762 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.3.6 (ROCm 7.0)
- Red Hat OpenShift AI 3.3 registry.redhat.io/rhai/base-image-rocm-7.0-rhel9
- RHSA-2026:82761 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.0.6 (CPU)
- Red Hat OpenShift AI 3.0 registry.redhat.io/rhai/base-image-cpu-rhel9
- RHSA-2026:82759 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.2.5 (CPU)
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- RHSA-2026:82758 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.3.6 (CUDA 12.9)
- Red Hat OpenShift AI 3.3 registry.redhat.io/rhai/base-image-cuda-12.9-rhel9
- RHSA-2026:82757 Released 2026-10-14 · Red Hat rating ImportantRed Hat AI Base Images 3.5.4 (Spyre)
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- RHSA-2026:80513 Released 2026-10-12 · Red Hat rating Importantopenssh security update
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- Red Hat Enterprise Linux BaseOS EUS (v.9.6) openssh-8.7p1-45.el9_6.5, openssh-clients-8.7p1-45.el9_6.5, openssh-keycat-8.7p1-45.el9_6.5 +1
- RHSA-2026:76993 Released 2026-10-07 · Red Hat rating Importantopenssh security update
- Red Hat Enterprise Linux BaseOS E4S (v.9.4) openssh-clients-8.7p1-38.el9_4.10, openssh-server-8.7p1-38.el9_4.10
- RHSA-2026:76748 Released 2026-10-06 · Red Hat rating Importantopenssh security update
- Red Hat Enterprise Linux AppStream EUS (v. 10.0) openssh-askpass-9.9p1-7.el10_0.5, openssh-keysign-9.9p1-7.el10_0.5
- Red Hat Enterprise Linux BaseOS EUS (v. 10.0) openssh-9.9p1-7.el10_0.5, openssh-clients-9.9p1-7.el10_0.5, openssh-keycat-9.9p1-7.el10_0.5 +1
- RHSA-2026:58981 Released 2026-08-24 · Red Hat rating CriticalRed Hat Update Infrastructure 5.3 Technology Preview security update
- Red Hat Update Infrastructure 5 registry.redhat.io/rhui5/cds-kubernetes-tp-rhel9, registry.redhat.io/rhui5/installer-tp-rhel9, registry.redhat.io/rhui5/rhua-tp-rhel9
- RHSA-2026:54387 Released 2026-08-12 · Red Hat rating ImportantRed Hat Update Infrastructure 5.2 security update
- Red Hat Update Infrastructure 5 registry.redhat.io/rhui5/cds-kubernetes-rhel9, registry.redhat.io/rhui5/cds-rhel9, registry.redhat.io/rhui5/haproxy-rhel9 +2
- RHSA-2026:47757 Released 2026-07-30 · Red Hat rating Importantopenssh security update
- Red Hat Enterprise Linux AppStream (v. 10) openssh-askpass-9.9p1-25.el10_2, openssh-keysign-9.9p1-25.el10_2
- Red Hat Enterprise Linux BaseOS (v. 10) openssh-9.9p1-25.el10_2, openssh-clients-9.9p1-25.el10_2, openssh-keycat-9.9p1-25.el10_2 +1
- RHSA-2026:47756 Released 2026-07-29 · Red Hat rating Importantopenssh security update
- Red Hat Enterprise Linux AppStream (v. 9) openssh-askpass-9.9p1-9.el9_8, pam_ssh_agent_auth-0.10.4-7.9.el9_8
- Red Hat Enterprise Linux BaseOS (v. 9) openssh-9.9p1-9.el9_8, openssh-clients-9.9p1-9.el9_8, openssh-keycat-9.9p1-9.el9_8 +1
- RHSA-2026:37382 Released 2026-07-09 · Red Hat rating ImportantRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images openssh-10.4p1-1.hum1@aarch64, openssh-10.4p1-1.hum1@src, openssh-10.4p1-1.hum1@x86_64 +12
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
OpenBSD OpenSSH 10.4
8 records Highest priority Priority MEDIUM 1 MEDIUM, 7 LOW
Other records, highest priority first
- TI-2026-42784 Use after free in OpenBSD OpenSSHPriority MEDIUM 42
- TI-2026-42783 sshd in OpenSSH before 10.4 does not always honor the minimum authentication delay.Priority LOW 35
- TI-2026-42782 Resource allocation without limits in OpenBSD OpenSSHPriority LOW 34
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:47757 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:47756 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2026:89739 |
| Red Hat Enterprise Linux AppStream EUS (v. 10.0) | Fixed | RHSA-2026:76748 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:80513 |
| Red Hat Enterprise Linux BaseOS (v. 10) | Fixed | RHSA-2026:47757 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2026:47756 |
| Red Hat Enterprise Linux BaseOS E4S (v.9.2) | Fixed | RHSA-2026:89739 |
| Red Hat Enterprise Linux BaseOS E4S (v.9.4) | Fixed | RHSA-2026:76993 |
| Red Hat Enterprise Linux BaseOS EUS (v. 10.0) | Fixed | RHSA-2026:76748 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.6) | Fixed | RHSA-2026:80513 |
| Red Hat Hardened Images | Fixed | RHSA-2026:37382 |
| Red Hat OpenShift AI 3.0 | Fixed | RHSA-2026:82751, RHSA-2026:82761, RHSA-2026:82903, RHSA-2026:82904, RHSA-2026:82914, RHSA-2026:91232 |
| Red Hat OpenShift AI 3.2 | Fixed | RHSA-2026:82750, RHSA-2026:82759, RHSA-2026:82920, RHSA-2026:82921, RHSA-2026:82922, RHSA-2026:82923 |
| Red Hat OpenShift AI 3.3 | Fixed | RHSA-2026:82754, RHSA-2026:82755, RHSA-2026:82758, RHSA-2026:82762, RHSA-2026:82902, RHSA-2026:82907, RHSA-2026:82913, RHSA-2026:82917 |
| Red Hat OpenShift AI 3.4 | Fixed | RHSA-2026:82749, RHSA-2026:82752, RHSA-2026:82753, RHSA-2026:82756, RHSA-2026:82897, RHSA-2026:82898, RHSA-2026:82899, RHSA-2026:82900, RHSA-2026:82901 |
| Red Hat OpenShift AI 3.5 | Fixed | RHSA-2026:82757, RHSA-2026:82763, RHSA-2026:82908, RHSA-2026:82909, RHSA-2026:82910, RHSA-2026:82912, RHSA-2026:82915, RHSA-2026:82916, RHSA-2026:82918 |
| Red Hat Update Infrastructure 5 | Fixed | RHSA-2026:54387, RHSA-2026:58981 |
Not affected: 12 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux AppStream E4S (v.9.2)
- Red Hat Enterprise Linux AppStream E4S (v.9.4)
- Red Hat Enterprise Linux AppStream EUS (v. 10.0)
- Red Hat Enterprise Linux AppStream EUS (v.9.6)
- Red Hat Enterprise Linux BaseOS E4S (v.9.2)
- Red Hat Enterprise Linux BaseOS E4S (v.9.4)
- Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
- Red Hat Enterprise Linux BaseOS EUS (v.9.6)
- Red Hat Update Infrastructure 5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-59996
- 2026-10-03 Alias added: GHSA-8v2x-fhq9-4fv3
- 2026-10-06 Fix available: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0) · Red Hat
- 2026-10-07 Fix available: RHSA-2026:76748 · Red Hat
- 2026-10-07 Fix available: RHSA-2026:76993 · Red Hat
- 2026-10-07 Fix available: Red Hat Enterprise Linux BaseOS E4S (v.9.4) · Red Hat
- 2026-10-12 Fix available: RHSA-2026:80513 · Red Hat
- 2026-10-12 Fix available: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6) · Red Hat
- 2026-10-14 Fix available: RHSA-2026:82749 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82899 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82909 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82918 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82756 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82761 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82907 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82897 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82754 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82916 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82763 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82753 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82758 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82750 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82903 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82914 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82912 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82915 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82921 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82923 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82762 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82902 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82898 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82757 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82920 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82900 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82752 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82917 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82755 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82904 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82901 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82908 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82751 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82913 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82922 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82910 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82759 · Red Hat
- 2026-10-16 Fix available: Red Hat OpenShift AI 3.0, Red Hat OpenShift AI 3.2, Red Hat OpenShift AI 3.3 +2 · Red Hat
- 2026-10-26 Fix available: RHSA-2026:89739 · Red Hat
- 2026-10-26 Fix available: Red Hat Enterprise Linux AppStream E4S (v.9.2), Red Hat Enterprise Linux BaseOS E4S (v.9.2) · Red Hat
- 2026-10-30 Fix available: RHSA-2026:91232 · Red Hat
- 2026-10-30 Affected versions changed · Red Hat
- 2026-11-06 Affected versions changed · Red Hat
References
More OpenBSD Openssh vulnerabilities
- TI-2023-19792 The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently… CVSS 3.1CRITICAL 9.8
- TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
- TI-2023-10601 OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during… CVSS 3.1MEDIUM 6.5
- TI-2018-11033 OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying… CVSS 3.1MEDIUM 5.9
- TI-2016-08105 Untrusted search path vulnerability in ssh-agent.c in ssh-agent in OpenSSH before 7.4… CVSS 3.1HIGH 7.3
- TI-2023-28040 In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-59996 · CVE Program
- CVE-2026-59996 · NVD
- FIRST EPSS
- GHSA-8v2x-fhq9-4fv3 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-59996 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences