BIT-pillow-2026-59197

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Import Source

https://github.com/bitnami/vulndb/tree/main/data/pillow/BIT-pillow-2026-59197.json

JSON Data

https://api.osv.dev/v1/vulns/BIT-pillow-2026-59197

Aliases

Published

2026-07-19T23:50:18Z

Modified

2026-09-08T08:48:18Z

Summary

Pillow: Heap out-of-bounds write in Pillow `ImageFilter.RankFilter` via integer overflow in `ImagingExpand`

Details

Pillow is a Python imaging library. Prior to 12.3.0, Pillow's public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter.RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and ImagingExpand() computes output dimensions with unchecked signed int arithmetic. This issue is fixed in version 12.3.0.

Database specific

{
    "cpes": [
        "cpe:2.3:a:python:pillow:*:*:*:*:*:python:*:*"
    ],
    "severity": "High"
}

References

Affected packages

Bitnami / pillow

Package

Name: pillow
Purl: pkg:bitnami/pillow

Severity

8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

12.3.0

Database specific

source

"https://github.com/bitnami/vulndb/tree/main/data/pillow/BIT-pillow-2026-59197.json"