CVE-2026-33327: Possible integer overflow leading to potential heap-based buffer overflow

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-20 · updated 2026-08-19
Weakness: CWE-190

Description

libvips is a fast image processing library with low memory needs. The `vipsload` operation in versions before and including 8.18.0 could incorrectly determine image dimensions leading to an integer overflow and a subsequent heap-based buffer overflow. This has been patched in version 8.18.1.

Affected products

libvips: before 8.18.1 — fixed in 8.18.1

How to fix

Upgrade to a fixed version: libvips 8.18.1. Check the vendor advisory for mitigations.

References

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

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