# CVE-2026-114112: Sharp remote code execution in bundled libheif

Source: https://junglewise.ai/threats/cve-2026-114112-sharp-before-0-35-4-bundles-a-vulnerable-libheif-dependency-that  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-21. Updated: 2026-10-21  
License: CC BY 4.0 with a link back

CVE-2026-114112 · Severity: info · Published 2026-10-21

Sharp is an image processing library used by web applications and services to resize and manipulate images. A flaw in its bundled libheif dependency allows attackers to execute arbitrary code on Linux systems by submitting specially crafted AVIF or HEIF image files. Applications that process untrusted images are at risk of complete compromise, including data theft and ransomware installation.

Technologies: [Lovell Sharp](https://junglewise.ai/threats/technologies/lovell-sharp). Vendors: [Lovell](https://junglewise.ai/threats/vendors/lovell).

## Quick answers

**Is CVE-2026-114112 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-114112 being exploited in the wild.

**How severe is CVE-2026-114112?** Informational severity, published 21 October 2026.

**Which products and versions are affected?** Lovell Sharp before 0.35.4.

**Is there a fix for CVE-2026-114112?** Yes: fixed in 0.35.4. Until then: Add the following code to prevent Sharp from decoding AVIF images: sharp.block({operation: ["VipsForeignLoadHeif"]}). Ensure your Node.js executable is compiled as a Position Independent Executable (PIE) for additional RCE protection. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-114112 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-114112?** Check whether you run Lovell Sharp at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 0.35.4

Add the following code to prevent Sharp from decoding AVIF images: sharp.block({operation: ["VipsForeignLoadHeif"]}). Ensure your Node.js executable is compiled as a Position Independent Executable (PIE) for additional RCE protection.

## Technical details

Sharp before 0.35.4 bundles a vulnerable version of libheif with heap-based buffer overflow vulnerabilities (CVE-2026-84383 and GHSA-2jg2-4ch7-h545). An attacker can trigger remote code execution by supplying malicious AVIF/HEIF image input to applications using Sharp, exploiting the flaw in libheif's image decoding on glibc-based Linux systems. The attack requires the application to process untrusted images; a fix exists in Sharp 0.35.4 which upgrades to libheif 1.23.2.

## Affected products

- lovell Sharp before 0.35.4

## Timeline

- 2026-08-27: disclosed: GitHub Security Advisory published
- 2026-10-21: advisory: NVD entry published

## References

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

## Related threats

- [Sharp image processing library bundled vulnerable libvips](https://junglewise.ai/threats/cve-2026-114113-sharp-before-0-35-0-bundles-a-version-of-libvips-affected-by)
- [sharp memory-related vulnerability in librsvg dependency](https://junglewise.ai/threats/cve-2026-114111-sharp-before-0-35-5-bundles-a-librsvg-dependency-affected-by-a)
- [sharp memory corruption in librsvg dependency](https://junglewise.ai/threats/sharp-vulnerability-in-librsvg-dependency-b5d03f31)