Pillow: PdfParser can recurse without limit in get_value() and linearize_page_tree()

影響: pip:Pillow >= 5.1.0, < 13.0.0 → 13.0.0

PdfParser's get_value() can recurse without any limit and crash with an uncaught RecursionError. It is reachable through Image.save(im, fp= , format="PDF", append=True) when the existing PDF file is attacker-controlled. This is the same class of bug as https://github.com/advisories/GHSA-r73j-pqj5-w3x7 (the /Prev trailer chain loop, fixed earlier this year), in the same file, but in two different functions that fix did not touch. Details get_value() in src/PIL/PdfParser.py This is a clas…

在 GitHub Advisory Database 阅读

2026/10/22 06:11，GitHub Advisory Database 发布了“Pillow: PdfParser can recurse without limit in get_value() and linearize_page_tree()”（类型：漏洞公告）。严重程度为“中危”（medium）。相关技术：Python、GitHub。CVE：CVE-2026-112391。