diff --git a/apps/dokploy/__test__/auth/enforce-sso-callback-cloud.test.ts b/apps/dokploy/__test__/auth/enforce-sso-callback-cloud.test.ts
new file mode 100644
index 000000000..f4e0a2f29
--- /dev/null
+++ b/apps/dokploy/__test__/auth/enforce-sso-callback-cloud.test.ts
@@ -0,0 +1,82 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+/**
+ * G2.2 — When IS_CLOUD is true (Dokploy Cloud), the SSO deny-list is not
+ * applied at all (enforceSSO is a self-hosted-only toggle). The `before` hook
+ * gates on `!IS_CLOUD`, so /callback/<provider> must never be blocked on cloud.
+ *
+ * This needs a separate test file because `IS_CLOUD` is captured at import
+ * time in the `createAuthMiddleware` closure (the auth singleton is created
+ * once per process). Vitest `pool: forks` isolates each test file in its own
+ * fork, so this file gets a fresh singleton with IS_CLOUD mocked to true.
+ */
+
+const { getWebServerSettings } = vi.hoisted(() => ({
+	getWebServerSettings: vi.fn(),
+}));
+
+vi.mock("@dokploy/server/constants", () => ({
+	IS_CLOUD: true,
+}));
+
+vi.mock("@dokploy/server/services/web-server-settings", () => ({
+	getWebServerSettings: (...args: unknown[]) => getWebServerSettings(...args),
+	updateWebServerSettings: vi.fn(),
+}));
+
+import { auth } from "@dokploy/server/lib/auth";
+
+const BASE = "http://localhost:3000/api/auth";
+
+const makeRequest = (path: string, init?: RequestInit) =>
+	new Request(`${BASE}${path}`, init);
+
+async function bodyText(res: Response): Promise<string> {
+	try {
+		return await res.text();
+	} catch {
+		return "";
+	}
+}
+
+const SSO_MESSAGE = "SSO is enforced";
+
+describe("enforceSSO before hook: cloud (IS_CLOUD=true) is never blocked (G2.2)", () => {
+	beforeEach(() => {
+		vi.clearAllMocks();
+	});
+
+	it("does not block /callback/github on cloud even when enforceSSO is true", async () => {
+		getWebServerSettings.mockResolvedValue({ enforceSSO: true });
+
+		// On Dokploy Cloud, the !IS_CLOUD gate is false, so the hook never throws
+		// regardless of enforceSSO. The request proceeds to the real callback.
+		let res: Response | null = null;
+		try {
+			res = await auth.handler(
+				makeRequest("/callback/github?code=x&state=y", { method: "GET" }),
+			);
+		} catch {
+			// Downstream state/DB errors are expected; the guarantee is no SSO block.
+		}
+		if (res) expect(await bodyText(res)).not.toContain(SSO_MESSAGE);
+	});
+
+	it("does not block /sign-in/email on cloud even when enforceSSO is true", async () => {
+		getWebServerSettings.mockResolvedValue({ enforceSSO: true });
+
+		let res: Response | null = null;
+		try {
+			res = await auth.handler(
+				makeRequest("/sign-in/email", {
+					method: "POST",
+					headers: { "content-type": "application/json" },
+					body: JSON.stringify({ email: "a@b.c", password: "x" }),
+				}),
+			);
+		} catch {
+			// Downstream errors are expected; the guarantee is no SSO block.
+		}
+		if (res) expect(await bodyText(res)).not.toContain(SSO_MESSAGE);
+	});
+});
diff --git a/apps/dokploy/__test__/auth/enforce-sso-callback.test.ts b/apps/dokploy/__test__/auth/enforce-sso-callback.test.ts
new file mode 100644
index 000000000..274538596
--- /dev/null
+++ b/apps/dokploy/__test__/auth/enforce-sso-callback.test.ts
@@ -0,0 +1,180 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+/**
+ * Regression coverage for the `hooks.before` SSO-enforcement middleware in
+ * `packages/server/src/lib/auth.ts`.
+ *
+ * Pre-fix, the deny-list only covered *initiation* endpoints (e.g.
+ * `/sign-in/social`) and omitted `/callback/:id` — the social-OAuth endpoint
+ * that actually exchanges the OAuth code and calls `setSessionCookie`. With
+ * `enforceSSO` enabled, a session could still be created through a social
+ * provider callback, bypassing the SSO-only policy.
+ *
+ * These tests drive the real better-auth request pipeline (`auth.handler`)
+ * with synthetic requests, so they exercise:
+ *   - the per-request base-URL rehydration (`basePath = /api/auth`),
+ *   - the user `hooks.before` middleware,
+ *   - and the denial/allow decision based on `webServerSettings.enforceSSO`.
+ *
+ * The global `__test__/setup.ts` mock neutralises `@dokploy/server/db`, and
+ * `IS_CLOUD` is `false` in the test environment (`process.env.IS_CLOUD` unset),
+ * so the self-hosted `!IS_CLOUD` branch is active exactly as in production.
+ */
+
+// Hoisted so the mock fn exists when `auth.ts` is imported: its module-load
+// context creation calls `resolveTrustedOrigins` -> `getWebServerSettings()`
+// before top-level `const` initialization would otherwise run.
+const { getWebServerSettings } = vi.hoisted(() => ({
+	getWebServerSettings: vi.fn(),
+}));
+
+vi.mock("@dokploy/server/services/web-server-settings", () => ({
+	getWebServerSettings: (...args: unknown[]) => getWebServerSettings(...args),
+	updateWebServerSettings: vi.fn(),
+}));
+
+import { auth } from "@dokploy/server/lib/auth";
+
+const BASE = "http://localhost:3000/api/auth";
+
+const makeRequest = (path: string, init?: RequestInit) =>
+	new Request(`${BASE}${path}`, init);
+
+async function bodyText(res: Response): Promise<string> {
+	try {
+		return await res.text();
+	} catch {
+		return "";
+	}
+}
+
+const SSO_MESSAGE = "SSO is enforced";
+
+describe("enforceSSO before hook: social OAuth callback gating", () => {
+	beforeEach(() => {
+		vi.clearAllMocks();
+	});
+
+	it("blocks the social OAuth callback /callback/github when enforceSSO is enabled", async () => {
+		getWebServerSettings.mockResolvedValue({ enforceSSO: true });
+
+		const res = await auth.handler(
+			makeRequest("/callback/github?code=x&state=y", { method: "GET" }),
+		);
+
+		expect(res.status).toBe(403);
+		expect(await bodyText(res)).toContain(SSO_MESSAGE);
+	});
+
+	it("blocks any provider social OAuth callback (e.g. /callback/google)", async () => {
+		getWebServerSettings.mockResolvedValue({ enforceSSO: true });
+
+		const res = await auth.handler(
+			makeRequest("/callback/google?code=x&state=y", { method: "GET" }),
+		);
+
+		expect(res.status).toBe(403);
+		expect(await bodyText(res)).toContain(SSO_MESSAGE);
+	});
+
+	it("does not block /callback/:id when enforceSSO is disabled", async () => {
+		getWebServerSettings.mockResolvedValue({ enforceSSO: false });
+
+		// With enforceSSO off, the hook must not short-circuit. The request proceeds
+		// to the real callback, which fails downstream for unrelated reasons (no real
+		// OAuth state exists), but it must never surface the SSO-enforcement message.
+		let res: Response | null = null;
+		try {
+			res = await auth.handler(
+				makeRequest("/callback/github?code=x&state=y", { method: "GET" }),
+			);
+		} catch {
+			// Downstream state/DB errors are expected under mocked storage; the
+			// guarantee under test is the absence of the SSO-enforcement denial.
+		}
+		if (res) expect(await bodyText(res)).not.toContain(SSO_MESSAGE);
+	});
+
+	it("does not block the legitimate SSO callback /sso/callback/:providerId when enforceSSO is enabled", async () => {
+		getWebServerSettings.mockResolvedValue({ enforceSSO: true });
+
+		// The `/callback/` prefix must not match `/sso/callback/...`; the enterprise
+		// SSO callback is the one path the admin wants to keep open under enforceSSO.
+		let res: Response | null = null;
+		try {
+			res = await auth.handler(
+				makeRequest("/sso/callback/myprovider?code=x&state=y", {
+					method: "GET",
+				}),
+			);
+		} catch {
+			// Downstream SSO state/DB errors are expected; the hook must not block it.
+		}
+		if (res) expect(await bodyText(res)).not.toContain(SSO_MESSAGE);
+	});
+
+	it("still blocks the email sign-in initiation path when enforceSSO is enabled", async () => {
+		getWebServerSettings.mockResolvedValue({ enforceSSO: true });
+
+		// No cookies and no Origin/Sec-Fetch-* headers: CSRF/origin checks are
+		// skipped, so the before hook is the gate that fires.
+		let res: Response | null = null;
+		try {
+			res = await auth.handler(
+				makeRequest("/sign-in/email", {
+					method: "POST",
+					headers: { "content-type": "application/json" },
+					body: JSON.stringify({ email: "a@b.c", password: "x" }),
+				}),
+			);
+		} catch {
+			// Unreachable for a blocked path — the hook returns a 403 Response.
+		}
+		expect(res).not.toBeNull();
+		expect(res?.status).toBe(403);
+		expect(await bodyText(res as Response)).toContain(SSO_MESSAGE);
+	});
+
+	it("does not block /callback/:id when enforceSSO settings are absent (G2.3)", async () => {
+		getWebServerSettings.mockResolvedValue(undefined);
+
+		// When the settings row is missing, settings?.enforceSSO is falsy, so the
+		// hook must not throw. The request proceeds to the real callback, which
+		// fails downstream for unrelated reasons, but must never surface the
+		// SSO-enforcement denial.
+		let res: Response | null = null;
+		try {
+			res = await auth.handler(
+				makeRequest("/callback/github?code=x&state=y", { method: "GET" }),
+			);
+		} catch {
+			// Downstream state/DB errors are expected; the guarantee is no SSO block.
+		}
+		if (res) expect(await bodyText(res)).not.toContain(SSO_MESSAGE);
+	});
+
+	it("does not block /sign-in/sso (the SSO init endpoint) when enforceSSO is enabled (G3.2)", async () => {
+		getWebServerSettings.mockResolvedValue({ enforceSSO: true });
+
+		// POST /sign-in/sso is the OIDC SSO initiation endpoint the admin relies on;
+		// it must remain open under enforceSSO. No cookies and no Origin/Sec-Fetch-*
+		// headers so CSRF/origin checks are skipped and the before hook is the gate.
+		let res: Response | null = null;
+		try {
+			res = await auth.handler(
+				makeRequest("/sign-in/sso", {
+					method: "POST",
+					headers: { "content-type": "application/json" },
+					body: JSON.stringify({
+						email: "alice@example.com",
+						callbackURL: "https://dokploy.example/dashboard",
+					}),
+				}),
+			);
+		} catch {
+			// Downstream SSO provider lookup errors are expected; the guarantee is
+			// that the SSO-enforcement hook did not block this path.
+		}
+		if (res) expect(await bodyText(res)).not.toContain(SSO_MESSAGE);
+	});
+});
diff --git a/apps/dokploy/__test__/auth/enforce-sso-prefix-precision.test.ts b/apps/dokploy/__test__/auth/enforce-sso-prefix-precision.test.ts
new file mode 100644
index 000000000..1ce6101f3
--- /dev/null
+++ b/apps/dokploy/__test__/auth/enforce-sso-prefix-precision.test.ts
@@ -0,0 +1,71 @@
+import { readdirSync, readFileSync } from "node:fs";
+import { createRequire } from "node:module";
+import path from "node:path";
+import { describe, expect, it } from "vitest";
+
+/**
+ * G5.1 — The `/callback/` prefix matches exactly the better-auth social-OAuth
+ * callback endpoint (`/callback/:id`) and nothing else among all endpoints
+ * registered by better-auth core and the plugins Dokploy loads
+ * (sso, passkey, scim, apiKey, organization, twoFactor, admin).
+ *
+ * Static cross-check: reads every `createAuthEndpoint("/...")` path string from
+ * the installed better-auth / @better-auth/* dist bundles and asserts that
+ * `/callback/:id` is the sole path beginning with `/callback/`.
+ */
+
+const nodeRequire = createRequire(import.meta.url);
+
+function resolveDist(pkgName: string): string | null {
+	try {
+		const entry = nodeRequire.resolve(pkgName);
+		const dist = path.dirname(entry);
+		readdirSync(dist);
+		return dist;
+	} catch {
+		return null;
+	}
+}
+
+function collectEndpointPaths(distDirs: string[]): string[] {
+	const paths = new Set<string>();
+	const re = /createAuthEndpoint\("([^"]+)"/g;
+	for (const dir of distDirs) {
+		const stack = [dir];
+		while (stack.length) {
+			const cur = stack.pop() as string;
+			for (const entry of readdirSync(cur, { withFileTypes: true })) {
+				const full = path.join(cur, entry.name);
+				if (entry.isDirectory()) stack.push(full);
+				else if (entry.name.endsWith(".mjs")) {
+					const content = readFileSync(full, "utf8");
+					let m: RegExpExecArray | null = re.exec(content);
+					while (m !== null) {
+						paths.add(m[1]);
+						m = re.exec(content);
+					}
+				}
+			}
+		}
+	}
+	return [...paths].sort();
+}
+
+describe("G5.1: /callback/ prefix precision", () => {
+	it("/callback/:id is the only registered endpoint beginning with /callback/", () => {
+		const dirs = [
+			resolveDist("better-auth"),
+			resolveDist("@better-auth/sso"),
+			resolveDist("@better-auth/passkey"),
+			resolveDist("@better-auth/api-key"),
+			resolveDist("@better-auth/scim"),
+		].filter((d): d is string => d !== null);
+
+		expect(dirs.length).toBeGreaterThan(0);
+		const allPaths = collectEndpointPaths(dirs);
+		expect(allPaths.length).toBeGreaterThan(0);
+
+		const callbackPrefixed = allPaths.filter((p) => p.startsWith("/callback/"));
+		expect(callbackPrefixed).toEqual(["/callback/:id"]);
+	});
+});
diff --git a/packages/server/src/lib/auth.ts b/packages/server/src/lib/auth.ts
index 10d62a5b0..cdee11752 100644
--- a/packages/server/src/lib/auth.ts
+++ b/packages/server/src/lib/auth.ts
@@ -132,7 +132,8 @@ const createBetterAuth = () =>
 					ctx.path.startsWith("/sign-in/passkey") ||
 					ctx.path.startsWith("/sign-up/email") ||
 					ctx.path.startsWith("/passkey/verify-authentication") ||
-					ctx.path.startsWith("/passkey/generate-authenticate-options");
+					ctx.path.startsWith("/passkey/generate-authenticate-options") ||
+					ctx.path.startsWith("/callback/");
 
 				if (!IS_CLOUD && isBlockedAuthPath) {
 					const settings = await getWebServerSettings();