CVE-2026-55427
- Source
- https://cve.org/CVERecord?id=CVE-2026-55427
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55427.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-55427
- Aliases
- Published
- 2026-07-07T23:55:26.240Z
- Modified
- 2026-07-10T04:03:03.325034190Z
- Severity
-
- 8.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- Coder vulnerable to SSH config injection via unsanitized server-supplied values in `coder config-ssh`
- Details
-
Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2,
coder config-sshwrote server-supplied SSH settings (HostnameSuffix,SSHConfigOptions) into the user's~/.ssh/configwithout sanitizing embedded newlines or restricting directives so a malicious or compromised Coder server could inject arbitrary SSH configuration. Practical exploitation requires control of the server-supplied values through a malicious or compromised deployment, a man-in-the-middle position or admin access to theHostnameSuffixandSSHConfigOptionssettings. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 validatesHostnameSuffixandSSHConfigOptionsagainst a strict character set that rejects newlines and other control characters. As a workaround, inspectcoder config-ssh --dry-runoutput before applying changes. - Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55427.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-74", "CWE-78" ] }- References
-
- https://github.com/coder/coder/releases/tag/v2.29.17
- https://github.com/coder/coder/releases/tag/v2.32.7
- https://github.com/coder/coder/releases/tag/v2.33.8
- https://github.com/coder/coder/releases/tag/v2.34.2
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55427.json
- https://github.com/coder/coder/security/advisories/GHSA-mcqq-fqgf-rxwm
- https://nvd.nist.gov/vuln/detail/CVE-2026-55427
- https://github.com/coder/coder/pull/26154
Affected packages
Git / github.com/coder/coder
Affected ranges
- Type
- GIT
- Repo
- https://github.com/coder/coder
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedIntroducedFixedIntroducedFixedIntroducedFixed
- Database specific
{ "source": [ "CPE_RANGE", "REFERENCES" ], "cpe": "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*", "extracted_events": [ { "introduced": "0" }, { "fixed": "2.29.17" }, { "introduced": "2.30.0" }, { "fixed": "2.32.7" }, { "introduced": "2.33.0" }, { "fixed": "2.33.8" }, { "introduced": "2.34.0" }, { "fixed": "2.34.2" } ] }