AIKIDO-2026-599658
next is vulnerable to Remote Code Execution (RCE)
95
Critical Risk
This Affects:
nextTL;DR
The Node.js ImageResponse implementation in next/og renders JSX through Satori into SVG and then into a PNG. Satori does not properly escape attacker-controlled values that land in SVG content, attributes, or styles, so that output can be interpreted as SVG markup rather than text. When those values flow into other Node.js rasterization dependencies, this becomes remote code execution in the Next.js process. The Edge ImageResponse path is not affected. The fix upgrades Satori and hardens next/og SVG serialization.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and your application uses the Node.js ImageResponse implementation from next/og with attacker-controlled values in SVG content, attributes, or styles.
Background info
next is vulnerable to Remote Code Execution (RCE) in versions 16.2.0 - 16.3.5.
How to fix this
Upgrade the next library to the patch version.
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