CVE-2026-106117: ImageSharp is a 2D graphics library

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HIGH 7.5REMOTEUPGRADE

CVE-2026-106117 is a high-severity flaw (CVSS 7.5) affecting imagesharp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ImageSharp is a 2D graphics library. From 3.0.0 until 4.1.1, decoding a strip TIFF using CCITT Group 3 or Modified Huffman compression can pass attacker-expanded runs to BitWriterUtils.WriteBits without first checking the current row width. T4TiffCompression.WritePixelRun can accumulate oversized makeup-code runs, and ModifiedHuffmanTiffCompression.Decompress validates the width only after writing. The unchecked writes can overflow the strip buff

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-787
Published	2026-10-06
Last modified	2026-10-27

Publisher (CNA): GitHub, Inc. · Vendor: sixlabors

Last updated 2026-10-27 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-06 18:16 UTCPublished CVE record published
2026-10-27 20:11 UTCUpdated Record last modified

sixlabors imagesharp UPGRADE

Affected: >= 3.0.0 and < 3.2.0 · >= 4.0.0 and < 4.1.1

Fixed in: 3.2.0, 4.1.1

Safe to downgrade to: a release before 3.0.0

1. Check installed version

apt-cache policy imagesharp || rpm -q imagesharp || imagesharp --version

2. UPGRADE to 3.2.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade imagesharp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade imagesharp

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 3.0.0 (Debian / Ubuntu)

apt-cache madison imagesharp sudo apt install imagesharp=<VERSION_BEFORE_3.0.0> sudo apt-mark hold imagesharp

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list imagesharp sudo dnf downgrade imagesharp-<VERSION_BEFORE_3.0.0> sudo dnf versionlock add imagesharp

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-106117?

imagesharp: upgrade to 3.2.0, 4.1.1. Exact commands for each OS are on this page.

Is CVE-2026-106117 being exploited?

CVE-2026-106117 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-106117 affect?

CVE-2026-106117 affects imagesharp. Severity is high (CVSS 7.5). ImageSharp is a 2D graphics library. From 3.0.0 until 4.1.1, decoding a strip TIFF using CCITT Group 3 or Modified Huffman compression can pass attacker-expanded runs to BitWriterUtils.WriteBits without first checking the current row width.

How urgent is CVE-2026-106117?

Priority 45/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-106110 HIGH 7.5 UPGRADE ImageSharp is a 2D graphics library
CVE-2026-106111 MEDIUM 5.9 UPGRADE ImageSharp is a 2D graphics library
CVE-2026-106112 HIGH 7.5 UPGRADE ImageSharp is a 2D graphics library
CVE-2026-106113 HIGH 7.5 UPGRADE ImageSharp is a 2D graphics library
CVE-2026-106114 MEDIUM 5.3 UPGRADE ImageSharp is a 2D graphics library

References

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