CVE-2026-106116
Published:October 06, 2026
Updated:October 10, 2026
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 Packages
SixLabors.ImageSharp (DOT_NET):
Affected version(s) >=4.0.0.0 <4.1.2Fix Suggestion:
Update to version 4.1.2https://github.com/SixLabors/ImageSharp.git (GITHUB):
Affected version(s) >=v4.0.0 <v4.1.2Fix Suggestion:
Update to version v4.1.2sixlabors.imagesharp (NUGET):
Affected version(s) >=2.0.0 <4.1.2Fix Suggestion:
Update to version 4.1.2sixlabors.imagesharp (NUGET):
Affected version(s) >=4.0.0 <4.1.2Fix Suggestion:
Update to version 4.1.2Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Loop with Unreachable Exit Condition ('Infinite Loop')
EPSS
Base Score:
0.37