Practical Security Guides For Your Team

Your website uses Next.js, a popular web framework, which includes a feature that automatically resizes and optimises images for visitors. A flaw in versions before 16.1.7 means this feature stores an unlimited number of image variants on disk with no cap — like a filing cabinet with no limit on how many folders can be added. An attacker could deliberately flood this cache to fill up your server's storage and take your site offline.

Your website's Next.js framework has a flaw in how it forwards certain web requests to your backend servers. Under specific conditions, an attacker could craft a specially shaped request that tricks the system into reaching internal or admin areas of your backend that were never meant to be publicly accessible. This only affects self-hosted setups — if your site runs on Vercel, you are not affected.

Your application uses an old version of Axios (v0.12.0), a popular tool that helps your software communicate with other services over the internet. This version has a known flaw that lets anyone send a specially crafted request to slow your server to a crawl — potentially making your app unavailable to real users. Upgrading to a newer version takes a developer less than an hour and fully resolves the issue.

Your website uses a feature in Next.js that automatically resizes and optimises images. A flaw in versions before 15.5.10 means an attacker could point this feature at an extremely large image and force your server to run out of memory — crashing your site. The attacker needs to be able to host or control a large image on a domain your site is already configured to trust.

Your website is running an outdated version of Next.js (the framework powering your web app) that contains a known security flaw. Under specific conditions, this flaw could allow an outside visitor to trick your server into making requests to internal systems it shouldn't be able to reach. A patch is available and the fix is straightforward — update to the latest version.

Your website uses Next.js, a popular framework for building web apps. A flaw in how it caches (stores and reuses) images means that a private image loaded by one logged-in user could be accidentally served to a different user who shouldn't see it. Think of it like a photo printing kiosk that accidentally hands your photos to the next person in line. This only affects sites that serve different images to different users based on who is logged in.

Your application uses a popular networking library called Axios to make web requests. A flaw in this library means that if your app accepts data from users, parses it as JSON, and passes it into Axios, an attacker can send a single specially crafted request that instantly crashes your server. Think of it like a specific combination lock that, when entered, causes the door to fall off its hinges rather than just staying locked.

Your website is running an older version of Next.js (a popular web framework) that has a known weakness in how it handles images. An attacker could repeatedly trigger the image processing feature in a way that overloads your server, making your site slow or temporarily unavailable. Upgrading to the latest version closes this gap.

A flaw in a specific Next.js feature called Partial Prerendering (PPR) allows anyone on the internet to crash your web server by sending a specially crafted request — no login required. This only affects self-hosted Next.js applications running in a specific 'minimal mode' configuration with PPR turned on. If your app is hosted on Vercel's platform, you are not affected.

Your website uses an outdated version of a form validation library (jquery-validation) that has a known security flaw. Under specific conditions, an attacker who can influence the text of form error messages could inject malicious code that runs in your visitors' browsers. This requires a fairly specific setup to exploit, but the fix is straightforward: update the library.

Your website uses an outdated version of a popular form-checking tool called jQuery Validation (version 1.14.0). This version has a known flaw where a visitor can submit a specially crafted URL into a form field and cause your server to get stuck processing it, slowing down or making your site unavailable to other users. The fix is a straightforward library upgrade.

Your website's security certificate has expired. Think of it like an ID badge with a past-due date — browsers check this badge every time someone visits, and when it's expired, they show a full-screen warning telling visitors your site is unsafe. Most people will leave immediately rather than click through.