ImageSharp is a 2D graphics library. From 2.1.0 until 4.1.2, the TIFF CCITT Group 4 encoder allocates Width times rowsPerStrip bytes even though T6BitCompressor.CompressStrip can emit encoded row data and two 12-bit end-of-facsimile-block codes beyond that capacity. TiffCcittCompressor.WriteCode performs unchecked writes, and a decode-and-re-encode flow can inherit TiffCompression.CcittGroup4Fax and one-bit metadata from attacker-supplied input. The resulting out-of-bounds writes can corrupt memory and terminate the process. This issue is fixed in version 4.1.2.
References
| Link | Resource |
|---|---|
| https://github.com/SixLabors/ImageSharp/commit/a9498c6db3642ef92c712ebc81e706914ac16a95 | Patch |
| https://github.com/SixLabors/ImageSharp/pull/3187 | Issue Tracking Patch |
| https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.2 | Release Notes |
| https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-jjfr-hcj7-qf5w | Exploit Vendor Advisory |
| https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-jjfr-hcj7-qf5w | Exploit Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
24 Oct 2026, 01:27
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:sixlabors:imagesharp:*:*:*:*:*:*:*:* | |
| References | () https://github.com/SixLabors/ImageSharp/commit/a9498c6db3642ef92c712ebc81e706914ac16a95 - Patch | |
| References | () https://github.com/SixLabors/ImageSharp/pull/3187 - Issue Tracking, Patch | |
| References | () https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.2 - Release Notes | |
| References | () https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-jjfr-hcj7-qf5w - Exploit, Vendor Advisory | |
| First Time |
Sixlabors imagesharp
Sixlabors |
09 Oct 2026, 02:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-jjfr-hcj7-qf5w - |
06 Oct 2026, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-10-06 18:16
Updated : 2026-10-24 01:27
NVD link : CVE-2026-106115
Mitre link : CVE-2026-106115
CVE.ORG link : CVE-2026-106115
JSON object : View
Products Affected
sixlabors
- imagesharp
CWE
CWE-787
Out-of-bounds Write
