Coder

Coder 2.3.1 before 2.14.4, 2.15.x before 2.15.3, and 2.16.0 before 2.16.1 contains an open redirect vulnerability in the login page because the redirect query parameter is improperly sanitized. Attackers can craft a Coder login URL that, when clicked by a logged-in user, redirects the victim to an attacker-controlled website for phishing.

Published: 2026-10-17T18:46:07.073Z
Updated: 2026-10-21T21:34:59.156Z

Coder before 2.29.21, 2.30.0 before 2.34.12, 2.35.0 before 2.35.9, 2.36.0 before 2.36.7, and 2.37.0 before 2.37.4 does not validate the audience claim of GCE instance-identity JWTs at the POST /api/v2/workspaceagents/google-instance-identity endpoint. Attackers who obtain an unexpired format=full identity token minted for another relying party can replay it to obtain that workspace agent's session token, which remains valid until the workspace's next build.

Published: 2026-10-28T18:59:56.265Z
Updated: 2026-10-29T20:54:16.473Z

Coder before 2.29.17, 2.30.0 before 2.32.7, 2.33.0 before 2.33.8, and 2.34.0 before 2.34.2 contains a user enumeration vulnerability because userpassword.Compare() substitutes a placeholder hash derived from the string "hunter2" when a stored password hash is empty. Unauthenticated attackers can submit logins with the password "hunter2" and distinguish HTTP 403 from 401 responses to enumerate valid accounts and reveal the authentication provider of SSO-only users.

Published: 2026-10-17T18:46:43.456Z
Updated: 2026-10-19T15:12:57.230Z

Coder before 2.29.20, 2.33.0 before 2.33.12, 2.34.0 before 2.34.8, and 2.35.0 before 2.35.4 contains an improper hostname validation flaw in GetWorkspaceProxyByHostname whose SIMILAR TO pattern performs a prefix match, so any domain that is a string prefix of a workspace-proxy access URL is trusted as a proxy. Attackers owning such a domain can lure an authenticated victim to a crafted /api/v2/applications/auth-redirect link, capture the redirected application_connect API key, and replay it to access the victim's workspace apps.

Published: 2026-10-17T18:46:39.347Z
Updated: 2026-10-21T21:45:39.027Z

Coder from 2.10.0 before 2.34.8 has an unauthenticated agent debug HTTP server on 127.0.0.1:2113 whose /debug/manifest handler returns the full agent manifest, including template-provided environment variable values. A lower-privileged Unix user or process in the same workspace can query this endpoint to read credentials such as cloud keys or registry tokens.

Published: 2026-10-17T18:46:38.631Z
Updated: 2026-10-18T11:42:56.278Z