VulWall Knowledge Base

Practical Security Guides For Your Team

Clear, non-alarmist guidance for real web vulnerabilities so your team can prioritize fixes confidently.

3 articles on this page 217 security topics

Browse Articles

Filter by topic, then open any article for business and technical remediation guidance.

Next.js Image Feature Can Be Abused to Fill Up Your Server's Disk

medium

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.

Exploitable Effort: small
dos denial-of-service disk-exhaustion nextjs +4
4 min read Mar 29, 2026

Next.js Image Cache Leak Can Expose Private Images to Wrong Users

high

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.

Exploitable Effort: small
cve cache-deception cwe-524 next.js +3
5 min read Mar 19, 2026

Outdated Next.js Version Can Be Used to Slow Down or Crash Your Website

medium

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.

Exploitable Effort: small
cve dos denial-of-service nextjs +4
4 min read Mar 19, 2026