Buffer over-read in libvips - CVE-2026-70652
Published: August 15, 2026
Vulnerability identifier: #VU142603
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-70652
CWE-ID: CWE-126
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose sensitive information and cause a denial of service.
The vulnerability exists due to a buffer over-read in JPEG gain map encoding when resizing and re-encoding a JPEG with a gain map. A local user can process a specially crafted JPEG through a specific image pipeline to disclose sensitive information and cause a denial of service.
Only libvips instances compiled with support for libultrahdr are vulnerable.
Affected software
libvips
How to mitigate CVE-2026-70652
Install security update from vendor's website.
libvips - update to 8.18.3