CVE-2026-55431 Coder's session token leaked to arbitrary hosts via `coder open app` for external workspace apps

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 $SESSIONTOKEN placeholder the...

CVE-2026-55431 Coder's session token leaked to arbitrary hosts via `coder open app` for external workspace apps

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 $SESSIONTOKEN placeholder the...

CVE-2026-55431

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 $SESSIONTOKEN placeholder the...

CVE-2026-55431

Coder prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 is vulnerable to session-token leakage via coder open app for external workspace apps. The CLI opens external workspace-app URLs without validating scheme/host, and if a URL contains the placeholder $SESSION_TOKEN, the token is substitute...

CVE-2026-55431: Insufficiently Protected Credentials

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 $SESSIONTOKEN placeholder the...

GO-2026-5924 Coder's session token leaked to arbitrary hosts via `coder open app` for external workspace apps in github.com/coder/coder

Coder's session token leaked to arbitrary hosts via coder open app for external workspace apps in github.com/coder/coder...

Open Redirect

Overview Affected versions of this package are vulnerable to Open Redirect via the coder open app process. An attacker can obtain a user's session token and impersonate their account by crafting a malicious external app URL containing a session token placeholder, which is then replaced with the...

Open Redirect

Overview Affected versions of this package are vulnerable to Open Redirect via the coder open app process. An attacker can obtain a user's session token and impersonate their account by crafting a malicious external app URL containing a session token placeholder, which is then replaced with the...