Is CVE-2026-106116 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-106116 being exploited in the wild.

How severe is CVE-2026-106116?

Medium severity, with a CVSS score of 5.3, published 6 October 2026.

Which products and versions are affected?

SixLabors.ImageSharp (NuGet) >= 2.0.0, <= 4.1.1, ECOSYSTEM:introduced=2.0.0,fixed=4.1.2; SixLabors ImageSharp 2.0.0 to 4.1.1.

Is there a fix for CVE-2026-106116?

Yes. SixLabors.ImageSharp (NuGet): upgrade to 4.1.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-106116 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-106116?

Check whether you run SixLabors.ImageSharp (NuGet) or SixLabors ImageSharp at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-106116: SixLabors ImageSharp denial of service in EXIF BigTIFF parser

Q: Is there a fix for CVE-2026-106116?

Yes. SixLabors.ImageSharp (NuGet): upgrade to 4.1.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-106116 attacked?

It is attacked over the network, in a software library.

Q: Am I affected by CVE-2026-106116?

Check whether you run SixLabors.ImageSharp (NuGet) or SixLabors ImageSharp at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-106116 · Severity: medium · CVSS 5.3 · Published 2026-10-06

ImageSharp is a 2D graphics library used to process images in .NET applications. An attacker can craft a malformed BigTIFF image file that causes the EXIF parser to enter an infinite loop, consuming CPU resources and making a decoder thread unresponsive for an attacker-controlled duration. This enables denial of service attacks against applications that process untrusted images.

Technologies: SixLabors.ImageSharp (NuGet), SixLabors ImageSharp. Vendors: NuGet, SixLabors.

Quick answers

Is CVE-2026-106116 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-106116 being exploited in the wild.
How severe is CVE-2026-106116?: Medium severity, with a CVSS score of 5.3, published 6 October 2026.
Which products and versions are affected?: SixLabors.ImageSharp (NuGet) >= 2.0.0, <= 4.1.1, ECOSYSTEM:introduced=2.0.0,fixed=4.1.2; SixLabors ImageSharp 2.0.0 to 4.1.1.
Is there a fix for CVE-2026-106116?: Yes. SixLabors.ImageSharp (NuGet): upgrade to 4.1.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-106116 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-106116?: Check whether you run SixLabors.ImageSharp (NuGet) or SixLabors ImageSharp at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

SixLabors.ImageSharp (NuGet): upgrade to 4.1.2 or later

dotnet add package SixLabors.ImageSharp --version 4.1.2

Technical details

The ExifReader.ReadValues64 method trusts the declared entry count in a BigTIFF IFD (Image File Directory) without validation and iterates once per entry. When fewer than 20 bytes remain in the stream, ReadValue64 returns without advancing the stream position or breaking the outer loop, causing an infinite loop. A network attacker can send a crafted BigTIFF image to trigger this condition, locking a single decoder thread indefinitely.

Affected products

SixLabors ImageSharp 2.0.0 to 4.1.1

Identifiers

CVE-2026-106116
GHSA-wmxv-xphr-5c9g

Timeline

2026-10-06: disclosed
2026-09-12: patched

References

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