diff --git a/.github/workflows/pr-tests.yml b/.github/workflows/pr-tests.yml
index 3ee322d..2255662 100644
--- a/.github/workflows/pr-tests.yml
+++ b/.github/workflows/pr-tests.yml
@@ -136,6 +136,10 @@ jobs:
           # directory layout (dc=example,dc=com) -- only the admin password
           # (normally supplied via a gitignored secrets.js) needs setting.
           app_ldap__bindPassword: your-ldap-password
+          # routes/oauth.js now refuses to start without a real jwtSecret.
+          # This is a non-secret test value; the container under test uses
+          # secrets.js.example's jwtSecret independently.
+          app_oauth__jwtSecret: ci-test-jwt-secret-do-not-use-in-production
         run: npm test
 
   test-summary:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a227e82..3615fac 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,23 @@ correspond to git tags (`vX.Y.Z`) and `nodejs/package.json`'s `version`.
 
 ## [Unreleased]
 
+## [1.1.16] - 2026-07-18
+
+### Security
+- Hardened LDAP filter and DN construction against injection. All user-supplied values interpolated into group filters (`models/group_ldap.js`) and RDN values used when adding users/groups (`models/user_ldap.js`) are now escaped before being sent to the LDAP server.
+- Replaced `Math.random()`-based token generation in `models/token.js`, `models/oauth_code.js`, and `models/oauth_client.js` with `crypto.randomUUID()` for session tokens, OAuth codes, access/refresh tokens, and client IDs.
+- Replaced `Math.random()`-based OTP generation in `OtpToken.issue()` with `crypto.randomInt()`.
+- `routes/oauth.js` now refuses to start if `oauth.jwtSecret` is missing or still set to the placeholder value, instead of falling back to a hardcoded public string.
+- Rendered docs and Terms-of-Service HTML in `routes/docs.js` and `routes/index.js` are now sanitized with `xss` to prevent stored XSS from malicious markdown.
+- Removed a `console.log` that wrote new-user data (including password hashes) to the log in `models/user_ldap.js`; reduced login-path error logging to `error.name`/`error.message` only.
+
+### Changed
+- Public-release packaging: removed `"private": true` from `nodejs/package.json` and bumped version to `1.1.16`.
+- CI workflow (`.github/workflows/pr-tests.yml`) now sets `app_oauth__jwtSecret` so the test suite can run against the new startup-time JWT validation.
+
+### Fixed
+- `models/email.js`: fixed a template bug where the rendered `from` address used `template.message` instead of `template.from`.
+
 ## [1.1.15] - 2026-07-18
 
 ### Changed
@@ -116,7 +133,7 @@ First tagged release. Establishes the `vX.Y.Z` tag convention that the in-app up
 - Unix/POSIX and LDAP bind-only service account support, distinct from real-person accounts.
 - Merged OAuth Apps + LDAP Info into a single Integrations page.
 
-[Unreleased]: https://github.com/theta42/sso-manager-node/compare/v1.1.15...HEAD
+[Unreleased]: https://github.com/theta42/sso-manager-node/compare/v1.1.16...HEAD
 [1.1.15]: https://github.com/theta42/sso-manager-node/compare/v1.1.14...v1.1.15
 [1.1.14]: https://github.com/theta42/sso-manager-node/compare/v1.1.13...v1.1.14
 [1.1.13]: https://github.com/theta42/sso-manager-node/compare/v1.1.12...v1.1.13
diff --git a/nodejs/models/auth.js b/nodejs/models/auth.js
index 85d69f0..21aebbf 100644
--- a/nodejs/models/auth.js
+++ b/nodejs/models/auth.js
@@ -23,7 +23,7 @@ Auth.login = async function(data){
 
 		return {user, token}
 	}catch(error){
-		console.error("AUTH LOGIN error:", error);
+		console.error("AUTH LOGIN error:", error.name, error.message);
 		throw this.errors.login();
 	}
 };
diff --git a/nodejs/models/email.js b/nodejs/models/email.js
index b131715..80bb7ee 100644
--- a/nodejs/models/email.js
+++ b/nodejs/models/email.js
@@ -58,7 +58,7 @@ Mail.sendTemplate = async function(to, template, context, from){
 		to,
 		mustache.render(template.subject, context),
 		mustache.render(template.message, context),
-		from || (template.from && mustache.render(template.message, context))
+		from || (template.from && mustache.render(template.from, context))
 	)
 };
 
diff --git a/nodejs/models/group_ldap.js b/nodejs/models/group_ldap.js
index 43ada8a..4f939aa 100644
--- a/nodejs/models/group_ldap.js
+++ b/nodejs/models/group_ldap.js
@@ -4,6 +4,31 @@ const { Client, Attribute, Change } = require('ldapts');
 const { LRUCache } = require('lru-cache');
 const conf = require('@simpleworkjs/conf').ldap;
 
+// Escape a value used inside an LDAP search filter (RFC 4515).
+function escapeLDAPSearchValue(val) {
+	return String(val)
+		.replace(/\\/g, '\\5c')
+		.replace(/\*/g, '\\2a')
+		.replace(/\(/g, '\\28')
+		.replace(/\)/g, '\\29')
+		.replace(/\0/g, '\\00');
+}
+
+// Escape a value used in an LDAP DN (RFC 4514). Defensive: usernames/cns
+// are normally alphanumeric, but this prevents metacharacter injection.
+function escapeLDAPDNValue(val) {
+	return String(val)
+		.replace(/\\/g, '\\\\')
+		.replace(/,/g, '\\,')
+		.replace(/\+/g, '\\+')
+		.replace(/"/g, '\\"')
+		.replace(/</g, '\\<')
+		.replace(/>/g, '\\>')
+		.replace(/;/g, '\\;')
+		.replace(/=/g, '\\=')
+		.replace(/^\s|\s$/g, match => match === ' ' ? '\\ ' : match);
+}
+
 function makeClient() {
 	return new Client({ url: conf.url });
 }
@@ -19,7 +44,7 @@ async function withClient(fn) {
 }
 
 async function getGroups(client, member){
-	let memberFilter = member ? `(member=${member})`: ''
+	let memberFilter = member ? `(member=${escapeLDAPSearchValue(member)})`: ''
 
 	let groups = (await client.search(conf.groupBase, {
 		scope: 'sub',
@@ -35,7 +60,8 @@ async function getGroups(client, member){
 }
 
 async function addGroup(client, data){
-	await client.add(`cn=${data.name},${conf.groupBase}`, {
+	const safeName = escapeLDAPDNValue(data.name);
+	await client.add(`cn=${safeName},${conf.groupBase}`, {
 		cn: data.name,
 		member: data.owner,
 		description: data.description,
@@ -139,9 +165,10 @@ Group.get = async function(data){
 	}
 
 	return withClient(async (client) => {
+		const safeName = escapeLDAPSearchValue(data.name);
 		let group = (await client.search(conf.groupBase, {
 			scope: 'sub',
-			filter: `(&(objectClass=groupOfNames)(cn=${data.name}))`,
+			filter: `(&(objectClass=groupOfNames)(cn=${safeName}))`,
 			attributes: ['cn', 'description', 'member', 'owner', 'createTimestamp', 'modifyTimestamp'],
 		})).searchEntries[0];
 
diff --git a/nodejs/models/oauth_client.js b/nodejs/models/oauth_client.js
index cea7bce..14063d6 100644
--- a/nodejs/models/oauth_client.js
+++ b/nodejs/models/oauth_client.js
@@ -2,7 +2,8 @@
 
 const Table = require('.');
 const bcrypt = require('bcrypt');
-const UUID = function b(a){return a?(a^Math.random()*16>>a/4).toString(16):([1e7]+-1e3+-4e3+-8e3+-1e11).replace(/[018]/g,b)};
+const crypto = require('crypto');
+const UUID = () => crypto.randomUUID();
 const conf = require('@simpleworkjs/conf');
 
 const defaultLifetime = (conf.oauth && conf.oauth.token_lifetime) || {
diff --git a/nodejs/models/oauth_code.js b/nodejs/models/oauth_code.js
index 7da5665..64739b9 100644
--- a/nodejs/models/oauth_code.js
+++ b/nodejs/models/oauth_code.js
@@ -1,7 +1,8 @@
 'use strict';
 
 const Table = require('.');
-const UUID = function b(a){return a?(a^Math.random()*16>>a/4).toString(16):([1e7]+-1e3+-4e3+-8e3+-1e11).replace(/[018]/g,b)};
+const crypto = require('crypto');
+const UUID = () => crypto.randomUUID();
 
 // Shared base keyMap matching Token's schema so these behave as tokens
 const tokenKeyMap = {
diff --git a/nodejs/models/token.js b/nodejs/models/token.js
index b845783..a282104 100644
--- a/nodejs/models/token.js
+++ b/nodejs/models/token.js
@@ -1,7 +1,8 @@
 'use strict';
 
 const Table = require('.');
-const UUID = function b(a){return a?(a^Math.random()*16>>a/4).toString(16):([1e7]+-1e3+-4e3+-8e3+-1e11).replace(/[018]/g,b)};
+const crypto = require('crypto');
+const UUID = () => crypto.randomUUID();
 
 
 class Token extends Table{
@@ -110,7 +111,7 @@ class OtpToken extends Token {
 		for (const t of existing) {
 			if (t.is_valid) await t.update({is_valid: false});
 		}
-		const code = String(Math.floor(100000 + Math.random() * 900000));
+		const code = String(crypto.randomInt(100000, 1000000));
 		return this.create({uid, code, method, created_by: uid});
 	}
 
diff --git a/nodejs/models/user_ldap.js b/nodejs/models/user_ldap.js
index 50f3e30..30fe669 100644
--- a/nodejs/models/user_ldap.js
+++ b/nodejs/models/user_ldap.js
@@ -45,6 +45,20 @@ function escapeLDAPSearchValue(val) {
               .replace(/\0/g, '\\00');
 }
 
+// Escape a value used in an LDAP DN (RFC 4514).
+function escapeLDAPDNValue(val) {
+	return String(val)
+		.replace(/\\/g, '\\\\')
+		.replace(/,/g, '\\,')
+		.replace(/\+/g, '\\+')
+		.replace(/"/g, '\\"')
+		.replace(/</g, '\\<')
+		.replace(/>/g, '\\>')
+		.replace(/;/g, '\\;')
+		.replace(/=/g, '\\=')
+		.replace(/^\s|\s$/g, match => match === ' ' ? '\\ ' : match);
+}
+
 // Compute the next available uid/gidNumber: the highest existing value below
 // conf.uidGidReservedFloor, plus one -- or conf.uidGidMin if there are no
 // such entries yet. Entries at/above the reserved floor (e.g. a bootstrap
@@ -72,7 +86,8 @@ async function addPosixGroup(client, data){
 
 	data.gidNumber = nextPosixId(groups, 'gidNumber');
 
-	await client.add(`cn=${data.cn},${conf.groupBase}`, {
+	const safeCn = escapeLDAPDNValue(data.cn);
+	await client.add(`cn=${safeCn},${conf.groupBase}`, {
 	  cn: data.cn,
 	  gidNumber: data.gidNumber,
 	  objectclass: [ 'posixGroup', 'top' ]
@@ -94,6 +109,7 @@ async function addPosixAccount(client, data){
 
 	data.uidNumber = nextPosixId(people, 'uidNumber');
 
+	const safeCn = escapeLDAPDNValue(data.cn);
 	const entry = {
 		cn: data.cn,
 		sn: data.sn,
@@ -143,7 +159,7 @@ async function addPosixAccount(client, data){
 		entry.manager = [].concat(data.manager);
 	}
 
-	await client.add(`cn=${data.cn},${conf.userBase}`, entry);
+	await client.add(`cn=${safeCn},${conf.userBase}`, entry);
 
 	return data
 
@@ -171,7 +187,6 @@ async function addLdapUser(client, data){
 			delete data.userPassword;
 		}
 
-		console.log('addLdapUser', data)
 		group = await addPosixGroup(client, data);
 		data = await addPosixAccount(client, group);
 
@@ -799,7 +814,7 @@ User.addSSHkey = async function(data) {
 // memberUid (RFC 2307, posixGroup) is a bare username, not a DN, unlike
 // groupOfNames' `member` used by app_sso_* groups in group_ldap.js.
 function personalGroupDN(uid){
-	return `cn=${uid},${conf.groupBase}`;
+	return `cn=${escapeLDAPDNValue(uid)},${conf.groupBase}`;
 }
 
 User.getPersonalGroupMembers = async function(uid) {
@@ -873,7 +888,7 @@ User.login = async function(data){
 		return user;
 
 	}catch(error){
-		console.error("USER LOGIN error:", error);
+		console.error("USER LOGIN error:", error.name, error.message);
 		throw error;
 	}
 };
diff --git a/nodejs/package-lock.json b/nodejs/package-lock.json
index 7909c5b..566ca01 100644
--- a/nodejs/package-lock.json
+++ b/nodejs/package-lock.json
@@ -1,17 +1,17 @@
 {
   "name": "t42-sso-manager",
-  "version": "1.1.15",
+  "version": "1.1.16",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "t42-sso-manager",
-      "version": "1.1.15",
+      "version": "1.1.16",
       "license": "MIT",
       "dependencies": {
         "@fortawesome/fontawesome-free": "^7.3.0",
         "@popperjs/core": "^2.11.8",
-        "@simpleworkjs/conf": "^1.1.0",
+        "@simpleworkjs/conf": "^1.2.0",
         "bcrypt": "^6.0.0",
         "bootstrap": "^5.3.8",
         "compression": "^1.8.1",
@@ -19,7 +19,7 @@
         "express": "^5.2.1",
         "express-rate-limit": "^8.5.2",
         "extend": "^3.0.2",
-        "jq-repeat": "^2.1.0",
+        "jq-repeat": "^2.2.0",
         "jquery": "^3.7.1",
         "jsonwebtoken": "^9.0.3",
         "ldapts": "^8.1.2",
@@ -30,7 +30,8 @@
         "mustache": "^4.2.0",
         "nodemailer": "^9.0.0",
         "p2psub": "^0.2.0",
-        "socket.io": "^4.8.3"
+        "socket.io": "^4.8.3",
+        "xss": "^1.0.15"
       },
       "devDependencies": {
         "jest": "^30.4.2",
@@ -2331,6 +2332,12 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/commander": {
+      "version": "2.20.3",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
+      "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==",
+      "license": "MIT"
+    },
     "node_modules/component-emitter": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.1.tgz",
@@ -2488,6 +2495,12 @@
         "node": ">= 8"
       }
     },
+    "node_modules/cssfilter": {
+      "version": "0.0.10",
+      "resolved": "https://registry.npmjs.org/cssfilter/-/cssfilter-0.0.10.tgz",
+      "integrity": "sha512-FAaLDaplstoRsDR8XGYH51znUN0UY7nMc6Z9/fvE8EXGwvJE9hu7W2vHwx1+bd6gCYnln9nLbzxFTrcO9YQDZw==",
+      "license": "MIT"
+    },
     "node_modules/debug": {
       "version": "4.4.3",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",
@@ -6488,6 +6501,22 @@
         }
       }
     },
+    "node_modules/xss": {
+      "version": "1.0.15",
+      "resolved": "https://registry.npmjs.org/xss/-/xss-1.0.15.tgz",
+      "integrity": "sha512-FVdlVVC67WOIPvfOwhoMETV72f6GbW7aOabBC3WxN/oUdoEMDyLz4OgRv5/gck2ZeNqEQu+Tb0kloovXOfpYVg==",
+      "license": "MIT",
+      "dependencies": {
+        "commander": "^2.20.3",
+        "cssfilter": "0.0.10"
+      },
+      "bin": {
+        "xss": "bin/xss"
+      },
+      "engines": {
+        "node": ">= 0.10.0"
+      }
+    },
     "node_modules/y18n": {
       "version": "5.0.8",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
diff --git a/nodejs/package.json b/nodejs/package.json
index 3ea313e..b84b699 100755
--- a/nodejs/package.json
+++ b/nodejs/package.json
@@ -1,7 +1,6 @@
 {
   "name": "t42-sso-manager",
-  "version": "1.1.15",
-  "private": true,
+  "version": "1.1.16",
   "author": [
     {
       "name": "William Mantly",
@@ -42,7 +41,8 @@
     "mustache": "^4.2.0",
     "nodemailer": "^9.0.0",
     "p2psub": "^0.2.0",
-    "socket.io": "^4.8.3"
+    "socket.io": "^4.8.3",
+    "xss": "^1.0.15"
   },
   "license": "MIT",
   "repository": {
diff --git a/nodejs/routes/docs.js b/nodejs/routes/docs.js
index b6e5bb2..1c6ef1b 100644
--- a/nodejs/routes/docs.js
+++ b/nodejs/routes/docs.js
@@ -4,6 +4,7 @@ const fs = require('fs');
 const path = require('path');
 const router = require('express').Router();
 const {marked} = require('marked');
+const xss = require('xss');
 const conf = require('@simpleworkjs/conf');
 const buildInfo = require('../utils/build_info');
 const rateLimit = require('../middleware/rate_limit');
@@ -131,7 +132,7 @@ router.get('/:slug', function(req, res, next) {
 			docs: docList,
 			currentSlug: req.params.slug,
 			docTitle: doc.title,
-			docHtml: fixDocLinks(fixImagePaths(marked(content))),
+			docHtml: xss(fixDocLinks(fixImagePaths(marked(content)))),
 		});
 	} catch (error) {
 		next(error);
diff --git a/nodejs/routes/index.js b/nodejs/routes/index.js
index d389511..d00ffce 100755
--- a/nodejs/routes/index.js
+++ b/nodejs/routes/index.js
@@ -5,6 +5,7 @@ var express = require('express');
 var router = express.Router();
 const moment = require('moment');
 const {marked} = require('marked');
+const xss = require('xss');
 const {InviteToken, PasswordResetToken} = require('./../models/token');
 const {Tos} = require('../models/tos');
 const conf = require('@simpleworkjs/conf');
@@ -46,7 +47,7 @@ router.get('/health', function(req, res) {
 router.get('/tos', async function(req, res, next) {
   try {
     const tos = await Tos.getCurrent();
-    res.render('tos', {...values, tosHtml: marked(tos.content), tosUpdatedOnFmt: moment(tos.updated_on, 'x').format('MMMM YYYY')});
+    res.render('tos', {...values, tosHtml: xss(marked(tos.content)), tosUpdatedOnFmt: moment(tos.updated_on, 'x').format('MMMM YYYY')});
   } catch (error) {
     next(error);
   }
@@ -68,7 +69,7 @@ router.get('/invites', function(req, res) {
 router.get('/onboarding', async function(req, res, next) {
   try {
     const tos = await Tos.getCurrent();
-    res.render('onboarding', {...values, tosHtml: marked(tos.content)});
+    res.render('onboarding', {...values, tosHtml: xss(marked(tos.content))});
   } catch (error) {
     next(error);
   }
diff --git a/nodejs/routes/oauth.js b/nodejs/routes/oauth.js
index 8475384..47630cd 100644
Binary files a/nodejs/routes/oauth.js and b/nodejs/routes/oauth.js differ