CVE-2026-55427

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Source
https://cve.org/CVERecord?id=CVE-2026-55427
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-55427.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-55427
Aliases
Downstream
Related
Published
2026-07-07T23:55:26Z
Modified
2026-10-16T03:00:02Z
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-ssh wrote server-supplied SSH settings (HostnameSuffix, SSHConfigOptions) into the user's ~/.ssh/config without 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 the HostnameSuffix and SSHConfigOptions settings. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 validates HostnameSuffix and SSHConfigOptions against a strict character set that rejects newlines and other control characters. As a workaround, inspect coder config-ssh --dry-run output before applying changes.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-74",
        "CWE-78"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55427.json"
}
References

Affected packages

Git / github.com/coder/coder

Affected ranges

Type
GIT
Repo
https://github.com/coder/coder
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
77253bfc55665027a374a5d2fb70f4ff74410326
Introduced
43e67d12e278e13399cffc77f132e8e628339477
Fixed
0374b00b63bc5043a507194f284ef298e0ea3b52
Introduced
f009c17217e6bad9a61ba511d23735bc1ce94da0
Fixed
f9486be96df392b017941ff6a6bd43a629adc86c
Introduced
3006da5ef7a9c27755aa5b2f3f5f05d2c8971a58
Fixed
d7774e5c4ca222ee89a8b6aa82b61c1f8bb81d1f
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "2.29.17"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "cpe":  "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*",
            "range":  [
                {
                    "introduced":  "2.30.0"
                },
                {
                    "fixed":  "2.32.7"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "cpe":  "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*",
            "range":  [
                {
                    "introduced":  "2.33.0"
                },
                {
                    "fixed":  "2.33.8"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "cpe":  "cpe:2.3:a:coder:coder:*:*:*:*:*:go:*:*",
            "range":  [
                {
                    "introduced":  "2.34.0"
                },
                {
                    "fixed":  "2.34.2"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "original_tag":  "v2.29.17",
            "range":  [
                {
                    "fixed":  "77253bfc55665027a374a5d2fb70f4ff74410326"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "original_tag":  "v2.32.7",
            "range":  [
                {
                    "fixed":  "0374b00b63bc5043a507194f284ef298e0ea3b52"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "original_tag":  "v2.33.8",
            "range":  [
                {
                    "fixed":  "f9486be96df392b017941ff6a6bd43a629adc86c"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "original_tag":  "v2.34.2",
            "range":  [
                {
                    "fixed":  "d7774e5c4ca222ee89a8b6aa82b61c1f8bb81d1f"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

Other
rm
v0.*
v0.10.0
v0.10.1
v0.10.2
v0.11.0
v0.12.0
v0.12.1
v0.12.2
v0.12.3
v0.12.4
v0.12.5
v0.12.6
v0.12.7
v0.12.8
v0.12.9
v0.13.0
v0.13.1
v0.13.2
v0.13.3
v0.13.4
v0.13.5
v0.13.6
v0.14.0
v0.14.1
v0.14.2
v0.14.3
v0.15.0
v0.15.1
v0.15.2
v0.15.3
v0.16.0
v0.17.0
v0.17.1
v0.17.2
v0.17.3
v0.17.4
v0.18.0
v0.18.1
v0.19.0
v0.19.1
v0.19.2
v0.20.0
v0.20.1
v0.21.0
v0.21.1
v0.21.2
v0.21.3
v0.22.0
v0.22.1
v0.22.2
v0.23.0
v0.23.1
v0.23.2
v0.23.3
v0.23.4
v0.23.5
v0.23.6
v0.23.7
v0.24.0
v0.24.1
v0.25.0
v0.26.0
v0.26.1
v0.26.2
v0.27.0
v0.27.1
v0.3.0
v0.3.1
v0.3.2
v0.3.3
v0.3.4
v0.3.5
v0.4.0
v0.4.1
v0.4.2
v0.4.3
v0.4.4
v0.5.0
v0.5.1
v0.5.10
v0.5.11
v0.5.2
v0.5.3
v0.5.4
v0.5.5
v0.5.6
v0.5.7
v0.5.8
v0.5.9
v0.6.0
v0.6.1
v0.6.2
v0.6.3
v0.6.4
v0.6.5
v0.6.6
v0.7.0
v0.7.1
v0.7.10
v0.7.11
v0.7.12
v0.7.2
v0.7.3
v0.7.4
v0.7.5
v0.7.6
v0.7.7
v0.7.8
v0.7.9
v0.8.0
v0.8.1
v0.8.10
v0.8.11
v0.8.12
v0.8.13
v0.8.14
v0.8.15
v0.8.2
v0.8.3
v0.8.4
v0.8.5
v0.8.6
v0.8.7
v0.8.8
v0.8.9
v0.9.0
v0.9.1
v0.9.10
v0.9.2
v0.9.3
v0.9.4
v0.9.5
v0.9.6
v0.9.7
v0.9.8
v0.9.9
v2.*
v2.0.2
v2.1.1
v2.1.2
v2.1.3
v2.1.4
v2.1.5
v2.10.0
v2.2.1
v2.29.0
v2.29.1
v2.29.10
v2.29.11
v2.29.12
v2.29.13
v2.29.14
v2.29.15
v2.29.16
v2.29.2
v2.29.3
v2.29.4
v2.29.5
v2.29.6
v2.29.7
v2.29.8
v2.29.9
v2.3.0
v2.3.1
v2.3.2
v2.3.3
v2.32.0
v2.32.0-rc.0
v2.32.1
v2.32.2
v2.32.3
v2.32.4
v2.32.5
v2.32.6
v2.33.0
v2.33.0-rc.0
v2.33.1
v2.33.2
v2.33.3
v2.33.4
v2.33.5
v2.33.6
v2.33.7
v2.34.0
v2.34.1
v2.4.0
v2.5.0
v2.5.1
v2.6.0
v2.7.0
v2.7.1
v2.8.0
v2.9.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-55427.json"