CVE-2026-70651 libvips: Possible integer overflow when reading multi-page TIFF images via ImageMagick
An attacker can cause a denial of service via heap buffer over-read in libvips when processing crafted multi-page TIFFs using the ImageMagick fallback path.
- 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-2026-70651?
CVE-2026-70651 is a medium-severity vulnerability in libvips, published on 20 Aug 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. Prior to version 8.18.3, libvips built without libtiff support but with ImageMagick support can overflow the combined frame height while loading a crafted multi-page TIFF through VipsForeignLoadMagick. The vulnerable calculations in libvips/foreign/magick6load.c and libvips/foreign/magick7load.c multiply the per-page Ysize by n_frames without a checked bound, which can cause a heap buffer over-read and process crash. Most package-manager builds include libtiff and do not use this affected fallback path. This issue is fixed in version 8.18.3.
Weakness: CWE-680
Which versions are affected by CVE-2026-70651?
How do I fix CVE-2026-70651?
Upgrade to a fixed version.
Is CVE-2026-70651 being exploited?
There is no known exploitation of CVE-2026-70651 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-70651, GHSA-7p29-wg2h-36q4, UBUNTU-CVE-2026-70651.