---
id: "CVE-2026-114112"
kind: "vulnerability"
aliases: ["CVE-2026-114112"]
title: "Sharp: bundled libheif flaw lets crafted images run code on glibc Linux"
severity: "high"
cvss: 8.9
epss: 0.00192
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["glibc-linux", "image-upload", "node.js", "package", "sharp"]
not_affected_if: ["musl-based-linux", "no-untrusted-image-input", "static-images-only"]
published_at: "2026-10-21T01:17:37+00:00"
first_seen_at: "2026-10-23T21:57:28+00:00"
updated_at: "2026-10-24T13:15:54+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114112", "first_seen_at": "2026-10-23T21:57:28+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-114112", "first_seen_at": "2026-10-24T13:15:54+00:00"}]
---

# Sharp: bundled libheif flaw lets crafted images run code on glibc Linux

Sharp versions before 0.35.4 ship a vulnerable copy of libheif, the HEIF/AVIF decoder. An attacker who supplies a crafted AVIF or HEIF image to an app that processes untrusted images with sharp may run code on the server.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

Run `npm ls sharp` and check the installed version is below 0.35.4.
Check whether the app accepts untrusted AVIF or HEIF uploads and processes them with sharp.

## Fix

Upgrade sharp to 0.35.4 or later, then reinstall and redeploy.

## Timeline

- 2026-10-23T21:57:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-114112
- 2026-10-24T13:15:54+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-114112

## From the sources

Sharp before 0.35.4 bundles a vulnerable libheif dependency that allows attackers to achieve possible remote code execution on glibc-based Linux by supplying crafted images. Attackers can submit malicious AVIF/HEIF input to applications processing untrusted images with sharp, triggering libheif decoding flaws to execute code.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_