CVE-2026-112406
NoneCVSS
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EPSS
0.3%
Published
Oct 19, 2026
CISA due date
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The record
Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow can enter an infinite loop while rewriting PDF pages. PdfParser.rewrite_pages() follows Parent relationships without detecting a cycle in the page tree. An attacker can supply a cyclic PDF to an application that appends an image to that PDF. This can hold the worker at full CPU and deny service. This issue is fixed in version 13.0.0.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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