ImageSharp is a 2D graphics library. From 2.0.0 until 4.1.2, the TIFF CCITT Group 3 encoder allocates an undersized compressed-data buffer for narrow 1-bit images. TiffCcittCompressor.Initialize does not reserve enough space for the row data and T4 end-of-line codes, and T4BitCompressor.CompressStrip reaches unchecked writes when TiffCompression.CcittGroup3Fax is selected directly or inherited from decoded TIFF metadata. An attacker-controlled encode or decode-and-re-encode flow can write beyond the logical output span, corrupt process memory, and terminate the process. This issue is fixed in version 4.1.2.
Metrics
Affected Vendors & Products
References
History
Sat, 24 Oct 2026 02:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:sixlabors:imagesharp:*:*:*:*:*:*:*:* |
Fri, 09 Oct 2026 02:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Wed, 07 Oct 2026 06:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Sixlabors
Sixlabors imagesharp |
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| Vendors & Products |
Sixlabors
Sixlabors imagesharp |
Tue, 06 Oct 2026 17:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | ImageSharp is a 2D graphics library. From 2.0.0 until 4.1.2, the TIFF CCITT Group 3 encoder allocates an undersized compressed-data buffer for narrow 1-bit images. TiffCcittCompressor.Initialize does not reserve enough space for the row data and T4 end-of-line codes, and T4BitCompressor.CompressStrip reaches unchecked writes when TiffCompression.CcittGroup3Fax is selected directly or inherited from decoded TIFF metadata. An attacker-controlled encode or decode-and-re-encode flow can write beyond the logical output span, corrupt process memory, and terminate the process. This issue is fixed in version 4.1.2. | |
| Title | ImageSharp: TIFF CCITT T4 encoder can write past its compressed output buffer | |
| Weaknesses | CWE-787 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-10-06T17:42:02.099Z
Updated: 2026-10-09T01:19:50.868Z
Reserved: 2026-10-06T15:33:55.333Z
Link: CVE-2026-106110
Updated: 2026-10-09T01:19:45.535Z
Status : Analyzed
Published: 2026-10-06T18:16:52.490
Modified: 2026-10-24T01:42:13.327
Link: CVE-2026-106110
No data.