CVE-2026-112394
High
Description
Pillow is a Python imaging library. Prior to 13.0.0, Pillow's P;2L and P;4L raw decoders can read past the end of an input buffer. ImagingRawDecode calculates a packed-pixel row size, while the unpackers read separately padded bit planes. A caller can supply a buffer and image dimensions whose accepted size is smaller than the unpacker's actual footprint. This can disclose up to three adjacent heap bytes in output pixels or crash the process. This issue is fixed in version 13.0.0.
SeverityHigh
CVSS8.2
Exploit probability—
Product
Python Pillow
PublishedOct 19, 2026
First seenOct 19, 2026
Weakness typeCWE-126CWE-126
How to fix
Update
- python pillow13.0.0 or later
- pillow13.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| python pillow | v < 13.0.0 | 13.0.0 |
| pillowPyPI | v < 13.0.0 | 13.0.0 |
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