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

🗓️ 20 Jul 2026 23:08:58Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 5 Views

Pillow large rank filter size can cause heap out-of-bounds write from unchecked output size.

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20 Jul 2026 23:08Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.18.2
EPSS0.00397
5