Path traversal in OpenSSH sftp lets servers write files elsewhere
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Partial Red Hat: 1 fixed, 8 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
OpenSSH before 10.6 has a path traversal flaw (CWE-23) in the sftp client's recursive copy operation. A malicious server can make the client write files to unintended locations. Exploitation requires a user to interact with the copy, and the impact is limited to integrity.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
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.
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
Update OpenSSH to version 10.6 or later. Red Hat fixes Red Hat Hardened Images in RHSA-2026:82247. The sources list no fixed version for Red Hat Enterprise Linux 8, 9 and 10 or for Red Hat OpenShift Container Platform 4 and 5, and Red Hat plans no fix for Red Hat Enterprise Linux 6 and 7. Red Hat OpenShift AI (RHOAI) is also listed as affected without a fix.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA OpenSSH (OpenBSD) Fixed in 10.6
Red Hat 1 advisory
- RHSA-2026:82247 Released 2026-10-13 · Red Hat rating ModerateRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images openssh-10.5p1-1.2.hum1@aarch64, openssh-10.5p1-1.2.hum1@s390x, openssh-10.5p1-1.2.hum1@src +19
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
OpenBSD OpenSSH 10.6
9 records Highest priority Priority LOW 9 LOW
Other records, highest priority first
- TI-2026-69092 Missing packet length check in OpenSSH sshd and ssh decompressionPriority LOW 34
- TI-2026-69090 Injection via command-line usernames in OpenSSH ssh clientPriority LOW 33
- TI-2026-69088 GSSAPI authentication state persists across attempts in OpenSSH sshdPriority LOW 32
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | — |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet |
| Red Hat Hardened Images | Fixed | RHSA-2026:82247 |
Not affected: 1 product
- Red Hat Hardened Images
Timeline
- 2026-10-07 Threatist record created from CVE-2026-106552
- 2026-10-07 Alias added: GHSA-695p-3q57-gff4
- 2026-10-07 CISA SSVC decision points changed
- 2026-10-13 CVSS score added · NVD
- 2026-10-20 Fix available: RHSA-2026:82247 · Red Hat
- 2026-10-20 Fix available: Red Hat Hardened Images · Red Hat
- 2026-10-20 CVSS score added · Red Hat
- 2026-10-30 Affected versions changed · Red Hat
- 2026-11-05 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-2026-106552 · CVE Program
- CVE-2026-106552 · NVD
- FIRST EPSS
- GHSA-695p-3q57-gff4 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-106552 · 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