CVE WatchOct 9, 2026

CVE-2026-106115

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 th

CVSS

7.5

High

EPSS

0.4%

p27

KEV

—

Exploit Today

0-100

Published: Oct 6, 2026 · Last modified: Oct 9, 2026 · CWE-787

EPSS · 30d

0.4%EPSS · 30 days0.4%

2026-10-072026-10-21

Technical description

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.

Official references

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