CVE-2026-106116: Sixlabors Imagesharp

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

ImageSharp is a 2D graphics library. From 2.0.0 until 4.1.2, ExifReader.ReadValues64 trusts the 64-bit BigTIFF IFD entry count and iterates once per declared entry. When fewer than 20 bytes remain, ExifReader.ReadValue64 returns without advancing the stream or terminating the outer loop, so a small malformed BigTIFF can keep one decoder thread executing for an attacker-controlled duration. This report does not claim worker-pool exhaustion. This issue is fixed in version 4.1.2.

Affected products

• Sixlabors Imagesharp: from 2.0.0, before 4.1.2 (fixed in 4.1.2)

Published 2026-10-06. Last modified 2026-10-06.