fix: NoSQL injection via token type in password reset and email verification endpoints (GHSA-vgjh-hmwf-c588)

spec/MongoTransform.spec.js

@@ -692,4 +692,5 @@ describe('relativeTimeToDate', () => {
       });
     });
   });
+
 });

spec/RegexVulnerabilities.spec.js

@@ -125,6 +125,149 @@ describe('Regex Vulnerabilities', () => {
     });
   });
 
+  describe('on password reset request via token (handleResetRequest)', () => {
+    beforeEach(async () => {
+      user = await Parse.User.logIn('[email protected]', 'somepassword');
+      // Trigger a password reset to generate a _perishable_token
+      await request({
+        url: `${serverURL}/requestPasswordReset`,
+        method: 'POST',
+        headers,
+        body: JSON.stringify({
+          ...keys,
+          _method: 'POST',
+          email: '[email protected]',
+        }),
+      });
+      // Expire the token so the handleResetRequest token-lookup branch matches
+      await Parse.Server.database.update(
+        '_User',
+        { objectId: user.id },
+        {
+          _perishable_token_expires_at: new Date(Date.now() - 10000),
+        }
+      );
+    });
+
+    it('should not allow $ne operator to match user via token injection', async () => {
+      // Without the fix, {$ne: null} matches any user with a non-null expired token,
+      // causing a password reset email to be sent — a boolean oracle for token extraction.
+      try {
+        await request({
+          url: `${serverURL}/requestPasswordReset`,
+          method: 'POST',
+          headers,
+          body: JSON.stringify({
+            ...keys,
+            token: { $ne: null },
+          }),
+        });
+        fail('should not succeed with $ne token');
+      } catch (e) {
+        expect(e.data.code).toEqual(Parse.Error.INVALID_VALUE);
+      }
+    });
+
+    it('should not allow $regex operator to extract token via injection', async () => {
+      try {
+        await request({
+          url: `${serverURL}/requestPasswordReset`,
+          method: 'POST',
+          headers,
+          body: JSON.stringify({
+            ...keys,
+            token: { $regex: '^.' },
+          }),
+        });
+        fail('should not succeed with $regex token');
+      } catch (e) {
+        expect(e.data.code).toEqual(Parse.Error.INVALID_VALUE);
+      }
+    });
+
+    it('should not allow $exists operator for token injection', async () => {
+      try {
+        await request({
+          url: `${serverURL}/requestPasswordReset`,
+          method: 'POST',
+          headers,
+          body: JSON.stringify({
+            ...keys,
+            token: { $exists: true },
+          }),
+        });
+        fail('should not succeed with $exists token');
+      } catch (e) {
+        expect(e.data.code).toEqual(Parse.Error.INVALID_VALUE);
+      }
+    });
+
+    it('should not allow $gt operator for token injection', async () => {
+      try {
+        await request({
+          url: `${serverURL}/requestPasswordReset`,
+          method: 'POST',
+          headers,
+          body: JSON.stringify({
+            ...keys,
+            token: { $gt: '' },
+          }),
+        });
+        fail('should not succeed with $gt token');
+      } catch (e) {
+        expect(e.data.code).toEqual(Parse.Error.INVALID_VALUE);
+      }
+    });
+  });
+
+  describe('on resend verification email', () => {
+    // The PagesRouter uses express.urlencoded({ extended: false }) which does not parse
+    // nested objects (e.g. token[$regex]=^.), so the HTTP layer already blocks object injection.
+    // The toString() guard in resendVerificationEmail() is defense-in-depth in case the
+    // body parser configuration changes. These tests verify the guard works correctly
+    // by directly testing the PagesRouter method.
+    it('should sanitize non-string token to string via toString()', async () => {
+      const { PagesRouter } = require('../lib/Routers/PagesRouter');
+      const router = new PagesRouter();
+      const goToPage = spyOn(router, 'goToPage').and.returnValue(Promise.resolve());
+      const resendSpy = jasmine.createSpy('resendVerificationEmail').and.returnValue(Promise.resolve());
+      const req = {
+        config: {
+          userController: { resendVerificationEmail: resendSpy },
+        },
+        body: {
+          username: 'testuser',
+          token: { $regex: '^.' },
+        },
+      };
+      await router.resendVerificationEmail(req);
+      // The token passed to userController.resendVerificationEmail should be a string
+      const passedToken = resendSpy.calls.first().args[2];
+      expect(typeof passedToken).toEqual('string');
+      expect(passedToken).toEqual('[object Object]');
+    });
+
+    it('should pass through valid string token unchanged', async () => {
+      const { PagesRouter } = require('../lib/Routers/PagesRouter');
+      const router = new PagesRouter();
+      const goToPage = spyOn(router, 'goToPage').and.returnValue(Promise.resolve());
+      const resendSpy = jasmine.createSpy('resendVerificationEmail').and.returnValue(Promise.resolve());
+      const req = {
+        config: {
+          userController: { resendVerificationEmail: resendSpy },
+        },
+        body: {
+          username: 'testuser',
+          token: 'validtoken123',
+        },
+      };
+      await router.resendVerificationEmail(req);
+      const passedToken = resendSpy.calls.first().args[2];
+      expect(typeof passedToken).toEqual('string');
+      expect(passedToken).toEqual('validtoken123');
+    });
+  });
+
   describe('on password reset', () => {
     beforeEach(async () => {
       user = await Parse.User.logIn('[email protected]', 'somepassword');

src/Routers/PagesRouter.js

@@ -108,7 +108,8 @@ export class PagesRouter extends PromiseRouter {
   resendVerificationEmail(req) {
     const config = req.config;
     const username = req.body?.username;
-    const token = req.body?.token;
+    const rawToken = req.body?.token;
+    const token = rawToken && typeof rawToken !== 'string' ? rawToken.toString() : rawToken;
 
     if (!config) {
       this.invalidRequest();

src/Routers/UsersRouter.js

@@ -458,6 +458,10 @@ export class UsersRouter extends ClassesRouter {
       throw new Parse.Error(Parse.Error.EMAIL_MISSING, 'you must provide an email');
     }
 
+    if (token && typeof token !== 'string') {
+      throw new Parse.Error(Parse.Error.INVALID_VALUE, 'token must be a string');
+    }
+
     let userResults = null;
     let userData = null;