CVE-2026-35591: Possible heap-based buffer overflow when decoding TIFF image containing well-crafted tile

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-122

Description

libvips is a fast image processing library with low memory needs. The `tiffload` operation in libvips versions before and including 8.18.1 could incorrectly determine the number of channels in a JPEG or JPEG2000-encoded tile within a TIFF image, leading to a possible buffer overflow. This has been patched in version 8.18.2.

Affected products

libvips: before 8.18.2 — fixed in 8.18.2

How to fix

Upgrade to a fixed version: libvips 8.18.2. Check the vendor advisory for mitigations.

References

https://github.com/libvips/libvips/commit/df044e409a0db77c980fa1a9f86a13fbfb2dc8fe
https://github.com/libvips/libvips/pull/4973
https://github.com/libvips/libvips/security/advisories/GHSA-523x-vhfw-6r76

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