CVE-2026-33328 Possible integer overflow on 32-bit systems when reading GIF images
An integer overflow in libvips on 32-bit systems when reading GIF images can lead to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-33328?
CVE-2026-33328 is a medium-severity vulnerability in libvips, published on 20 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
libvips is a fast image processing library with low memory needs. On 32-bit systems in versions before and including 8.18.0, the `gifload` operation could incorrectly determine dimensions leading to an integer overflow. This has been patched in version 8.18.1.
Weakness: CWE-190
Which versions are affected by CVE-2026-33328?
It affects 1 product.
Products include Libvips Libvips.
How do I fix CVE-2026-33328?
Upgrade to a fixed version.
Is CVE-2026-33328 being exploited?
There is no known exploitation of CVE-2026-33328 in the wild and no public exploit code.
Other vulnerabilities in libvips
- CVE-2019-17534 Use after free in n/a
- CVE-2026-33327 Possible integer overflow leading to potential heap-based buffer overflow
- CVE-2026-35591 Possible heap-based buffer overflow when decoding TIFF image containing well-crafted tile
- CVE-2026-35590 Possible out-of-bounds read leading to crash when decoding well-crafted EXIF metadata
- CVE-2021-27847 Denial of service in n/a
Sources
Also known as CLEANSTART-2026-XT37855, DEBIAN-CVE-2026-33328, GHSA-r98w-4fp7-m9c7, UBUNTU-CVE-2026-33328.