Integer Overflow Affecting sharp package, versions <0.35.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-SHARP-18184262
- published22 Jul 2026
- disclosed21 Jul 2026
- creditElhanan Haenel
Introduced: 21 Jul 2026
NewCVE-2026-33328 (opens in a new tab)How to fix?
Upgrade sharp to version 0.35.0 or higher.
Overview
sharp is a High performance Node.js image processing, the fastest module to resize JPEG, PNG, WebP, GIF, AVIF and TIFF images
Affected versions of this package are vulnerable to Integer Overflow in the bundled libvips GIF loader (VipsForeignLoadNsgif), which can miscompute image dimensions on 32-bit systems. An attacker can crash the process by supplying a GIF whose dimensions overflow the size calculation. Exploitation affects only 32-bit systems and requires the application to decode an untrusted GIF through sharp.
Workaround
This vulnerability can be avoided by blocking the GIF loader through sharp's block() for the VipsForeignLoadNsgif operation, or by setting the VIPS_BLOCK_UNTRUSTED environment variable, so untrusted GIF images are not decoded.