Buffer overflow in Sixlabors Imagesharp
CVE-2026-106118
ImageSharp is a 2D graphics library. From 3.0.0 until 4.1.1, tiled TIFF decoding allocates a destination buffer using TileWidth but TiffDecompressorsFactory.Create constructs T4, T6, and Modified Huffman decompressors using the full frame width. TiffDecoderCore.DecodeTilesChunky can therefore direct frame-width fax scanlines into a tile-width buffer when TileWidth is smaller than ImageWidth. The mismatch causes attacker-controlled out-of-bounds writes, heap corruption, and process termination even with legal per-row run codes. This tiled-path vulnerability is distinct from oversized CCITT runs in strip decoding. This issue is fixed in version 4.1.1.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Sixlabors Imagesharp — versions >= 3.0.0, < 4.1.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-106118?
- CVE-2026-106118 is a high-severity vulnerability in Sixlabors Imagesharp, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2026-10-06.
- How severe is CVE-2026-106118?
- High severity. CVSS v3 base score is 7.5 out of 10.