diff --git a/app/base.css b/app/base.css
index 93e26a13..4168c387 100644
--- a/app/base.css
+++ b/app/base.css
@@ -123,6 +123,7 @@ a {
   cursor: pointer;
 
   /* Force flat button look */
+  /* stylelint-disable-next-line plugin/no-unsupported-browser-features */
   appearance: none;
   font-size: 15px;
   padding-bottom: 3px;
diff --git a/app/dragManager.js b/app/dragManager.js
index 3d4d810e..905f14a3 100644
--- a/app/dragManager.js
+++ b/app/dragManager.js
@@ -19,6 +19,7 @@ export default function(state, emitter) {
           return;
         }
         if (target.files.length > 1) {
+          // eslint-disable-next-line no-alert
           return alert(state.translate('uploadPageMultipleFilesAlert'));
         }
         const file = target.files[0];
@@ -26,9 +27,8 @@ export default function(state, emitter) {
           return;
         }
         if (file.size > MAXFILESIZE) {
-          window.alert(
-            state.translate('fileTooBig', { size: bytes(MAXFILESIZE) })
-          );
+          // eslint-disable-next-line no-alert
+          alert(state.translate('fileTooBig', { size: bytes(MAXFILESIZE) }));
           return;
         }
         emitter.emit('upload', { file, type: 'drop' });
diff --git a/app/fileManager.js b/app/fileManager.js
index d1860c1d..0dab3cba 100644
--- a/app/fileManager.js
+++ b/app/fileManager.js
@@ -111,6 +111,7 @@ export default function(state, emitter) {
       openLinksInNewTab(links, false);
       emitter.emit('pushState', `/share/${ownedFile.id}`);
     } catch (err) {
+      // eslint-disable-next-line no-console
       console.error(err);
 
       if (err.message === '0') {
@@ -136,6 +137,7 @@ export default function(state, emitter) {
       metrics.addedPassword({ size: file.size });
       await delay(1000);
     } catch (err) {
+      // eslint-disable-next-line no-console
       console.error(err);
       state.passwordSetError = err;
     } finally {
@@ -186,6 +188,7 @@ export default function(state, emitter) {
         state.transfer.reset();
         return render();
       }
+      // eslint-disable-next-line no-console
       console.error(err);
       state.transfer = null;
       const location = err.message === '404' ? '/404' : '/error';
diff --git a/app/pages/welcome/index.js b/app/pages/welcome/index.js
index 22da7656..6711cf43 100644
--- a/app/pages/welcome/index.js
+++ b/app/pages/welcome/index.js
@@ -73,7 +73,8 @@ module.exports = function(state, emit) {
       return;
     }
     if (file.size > MAXFILESIZE) {
-      window.alert(state.translate('fileTooBig', { size: bytes(MAXFILESIZE) }));
+      // eslint-disable-next-line no-alert
+      alert(state.translate('fileTooBig', { size: bytes(MAXFILESIZE) }));
       return;
     }
 
diff --git a/common/locales.js b/common/locales.js
index 17eb9c2a..ba1476de 100644
--- a/common/locales.js
+++ b/common/locales.js
@@ -4,7 +4,7 @@ const isServer = typeof gen === 'function';
 const prefix = isServer ? '/' : '';
 let manifest = {};
 try {
-  //eslint-disable-next-line node/no-missing-require
+  // eslint-disable-next-line node/no-missing-require
   manifest = require('../dist/manifest.json');
 } catch (e) {
   // use middleware
@@ -17,6 +17,7 @@ function getLocale(name) {
 }
 
 function serverTranslator(name) {
+  // eslint-disable-next-line security/detect-non-literal-require
   return require(`../dist/${locales[`public/locales/${name}/send.ftl`]}`);
 }
 
diff --git a/server/middleware/language.js b/server/middleware/language.js
index 88282642..7cbe2ecb 100644
--- a/server/middleware/language.js
+++ b/server/middleware/language.js
@@ -4,6 +4,10 @@ const fs = require('fs');
 const path = require('path');
 const { negotiateLanguages } = require('fluent-langneg');
 const langData = require('cldr-core/supplemental/likelySubtags.json');
+
+// We return early in the middleware if the lang header is long.
+// If that ever changes we should re-evaluate this regex.
+// eslint-disable-next-line security/detect-unsafe-regex
 const acceptLanguages = /(([a-zA-Z]+(-[a-zA-Z0-9]+){0,2})|\*)(;q=[0-1](\.[0-9]+)?)?/g;
 
 function allLangs() {