Coder's session token leaked to arbitrary hosts via `coder open app` for external workspace apps
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| coder | coder | affected |
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Configuration 1 [-]
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No data.
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| Coder | Coder |
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| Source | ID | Title |
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Github GHSA |
GHSA-v54h-cp2w-9x4g | Coder's session token leaked to arbitrary hosts via `coder open app` for external workspace apps |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.336% probability within 30 days)
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ssvc
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| First Time appeared |
Coder
Coder coder |
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| Vendors & Products |
Coder
Coder coder |
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| Description | 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 open app` opens external workspace-app URLs without validating the scheme or host. When an external app URL contains the `$SESSION_TOKEN` placeholder the CLI replaces it with the user's real session token before handing the URL to the OS open handler. Practical exploitation requires the victim to run `coder open app` against a workspace whose external app definition the attacker controls. Only a malicious template author can control external app URLs. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 applies a URL-scheme allowlist in the CLI and limits `$SESSION_TOKEN` substitution to trusted destinations like the web frontend. As a workaround, avoid running `coder open app` for untrusted workspaces. | |
| Title | Coder's session token leaked to arbitrary hosts via `coder open app` for external workspace apps | |
| Weaknesses | CWE-522 CWE-601 |
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| References |
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| Metrics |
cvssV3_1
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