# CVE-2026-33327: libvips heap buffer overflow in vipsload operation

Source: https://junglewise.ai/threats/cve-2026-33327-libvips-heap-buffer-overflow-in-vipsload-operation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-20. Updated: 2026-07-20  
License: CC BY 4.0 with a link back

CVE-2026-33327 · Severity: info · CVSS 7 · Published 2026-07-20

libvips is a high-performance image processing library used by many applications to resize and manipulate images. A vulnerability in how it handles image dimensions could allow an attacker to cause a system crash or potentially execute unauthorized code. This could lead to service disruptions or the compromise of data handled by the application using the library.

Technologies: [Libvips](https://junglewise.ai/threats/technologies/libvips). Vendors: [Libvips](https://junglewise.ai/threats/vendors/libvips).

## Quick answers

**Is CVE-2026-33327 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-33327 being exploited in the wild.

**How severe is CVE-2026-33327?** Informational severity, with a CVSS score of 7, published 20 July 2026.

**Which products and versions are affected?** Libvips <= 8.18.0.

**Is there a fix for CVE-2026-33327?** A patch was published on 2026-03-07: Fix merged into 8.18 branch Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-33327 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-33327?** Check whether you run Libvips 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.

## Technical details

An integer overflow vulnerability exists in the `vipsload` operation of libvips versions up to and including 8.18.0. The root cause is an incorrect calculation of image dimensions, which can trigger a heap-based buffer overflow during image processing. An attacker with local access could exploit this by providing a specially crafted image file to be processed by the library. Successful exploitation could lead to arbitrary code execution or a denial-of-service (DoS) condition. The issue has been addressed in version 8.18.1, and workarounds include blocking the 'VipsForeignLoadVips' operation or setting the VIPS_BLOCK_UNTRUSTED environment variable.

## Affected products

- libvips libvips <= 8.18.0

## Timeline

- 2026-03-07: patched: Fix merged into 8.18 branch
- 2026-07-17: advisory: GitHub Security Advisory published
- 2026-07-20: disclosed: CVE published to NVD

## References

- [https://github.com/libvips/libvips/commit/61e71c13328ed72d0a530dffc19b9b225072bdf9](https://github.com/libvips/libvips/commit/61e71c13328ed72d0a530dffc19b9b225072bdf9)
- [https://github.com/libvips/libvips/pull/4934](https://github.com/libvips/libvips/pull/4934)
- [https://github.com/libvips/libvips/security/advisories/GHSA-2fcj-gj27-279x](https://github.com/libvips/libvips/security/advisories/GHSA-2fcj-gj27-279x)

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