Heap-based Buffer 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-18184418
- published22 Jul 2026
- disclosed21 Jul 2026
- creditElhanan Haenel
Introduced: 21 Jul 2026
NewCVE-2026-35591 (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 Heap-based Buffer Overflow in the bundled libvips TIFF loader (VipsForeignLoadTiff), which can miscount the channels of a tile encoded as JPEG or JPEG2000 within a TIFF image. An attacker can corrupt heap memory and crash the process, with a possibility of code execution, by supplying a TIFF whose JPEG or JPEG2000 tiles cause the channel count to be misdetermined and the buffer undersized. Exploitation requires the application to decode an untrusted TIFF with JPEG or JPEG2000 tiles through sharp.
Workaround
This vulnerability can be avoided by blocking the TIFF loader through sharp's block() for the VipsForeignLoadTiff operation, or by setting the VIPS_BLOCK_UNTRUSTED environment variable, so untrusted TIFF images are not decoded.