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CVE-2026-28231 pillow_heif Has Integer Overflow in Encode Path Buffer Validation that Leads to Heap Out-of-Bounds Read

🗓️ 27 Feb 2026 20:13:45Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 3 Views

Pillow_heif pre-1.3.0 has integer overflow in encode path buffer validation causing heap read.

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02 Apr 2026 13:22Current
6.1Medium risk
Vulners AI Score6.1
CVSS 46.9
EPSS0.00632
3