CVSS 4.0
8.4 highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:NCVE-2026-128067
Pillow: Heap buffer overflow saving TIFF with libtiff when tags override image size
High (8.4) in python-pillow pillow. Fixed in pillow 13.0.0.
Pillow is a Python imaging library. From 2.3.0 through 12.3.0, Pillow applications that save compressed TIFF images through libtiff can pass attacker-controlled image geometry tags to the encoder while allocating its row buffer from the actual image dimensions. The affected TiffImagePlugin._save path allows ImageWidth, ImageLength, or SamplesPerPixel from exif=, tiffinfo=, or a source TIFF IFD to make libtiff consume a larger scanline than the buffer supplied by ImagingLibTiffEncode. This can read heap memory into the generated TIFF or crash the process. When TIFF Predictor 2 is enabled, libtiff can rewrite the oversized scanline in place and corrupt memory beyond the buffer. A carried-over PlanarConfiguration value of 2 instead makes libtiff use a shorter scanline and can produce an undecodable output file, but is not established to cause the out-of-bounds access. This issue is fixed in version 13.0.0.
Severity
- CWE
- CWE-787 Out-of-bounds Write
- Published
- Assigned by
- GitHub_M (CNA)
- NVD analysis
- Not in the NVD yet
- Record from
- the CVE List, synced
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Affected
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| python-pillow Pillow | >= 2.3.0, < 13.0.0 |
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-xcvg-w56q-r89m | PyPI | pillow | <13.0.0 | 13.0.0 |
References
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-xcvg-w56q-r89m
- https://github.com/python-pillow/Pillow/commit/53318b50e8e9e85a57d033d4d879e1398d97aeb1
- https://github.com/python-pillow/Pillow/commit/ec5f1cbcf67275641abaad5c065ffb64a0a804a9
- https://github.com/python-pillow/Pillow/releases/tag/13.0.0