CVE-2025-54575

Medium

Description

ImageSharp is a 2D graphics library. In versions below 2.1.11 and 3.0.0 through 3.1.10, a specially crafted GIF file containing a malformed comment extension block (with a missing block terminator) can cause the ImageSharp GIF decoder to enter an infinite loop while attempting to skip the block. This leads to a denial of service. Applications processing untrusted GIF input should upgrade to a patched version. This issue is fixed in versions 2.1.11 and 3.1.11.

SeverityMedium

CVSS5.3

Exploit probability—

ProductSixlabors.imagesharp

PublishedJul 30, 2025

First seenJul 30, 2025

Weakness typeCWE-400Uncontrolled resource consumption CWE-770Allocation of resources without limits

How to fix

Update

SixLabors.ImageSharp2.1.11, 3.1.11 or later

Affected products

Product	Affected versions	Fixed in
SixLabors.ImageSharpNuGet	v < 2.1.11, 3.0.0 ≤ v < 3.1.11	2.1.11, 3.1.11

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