pypdf: Possible infinite loop when processing threads/articles in writer

中危 5.5CVE-2026-54651 · GHSA-g9xf-7f8q-9mcj · PYSEC-2026-3018 · Published 22/06/2026 · updated 25/10/2026

要点

CVE-2026-54651 是影响 pypdf, pypdf (pypdf project) 的中危 (CVSS 5.5)漏洞。
未来 30 天内被利用的概率（EPSS）：0.16%，高于 4.9% 的漏洞。
修复：升级到 6.13.1 或更高版本。

Package	Affected versions	Patched versions
pypdf PyPI	`< 6.13.1`	`6.13.1`
pypdf pypdf_project	`< 6.13.1`	`6.13.1`

Description

Impact

An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with threads/articles into a writer.

Patches

This has been fixed in pypdf==6.13.1.

Workarounds

If users cannot upgrade yet, consider applying the changes from PR #3839.

NVD description

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.1, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with threads/articles into a writer. This vulnerability is fixed in 6.13.1.

References

py-pdf/pypdf security advisory · WEB
nvd.nist.gov/vuln/detail/CVE-2026-54651 · ADVISORY
py-pdf/pypdf#3839 · WEB
py-pdf/pypdf · PACKAGE
py-pdf/pypdf release 6.13.1 · WEB
pypi.org/project/pypdf · PACKAGE
GitHub Advisory GHSA-g9xf-7f8q-9mcj · ADVISORY

pypdf 的其他漏洞

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Package

Affected versions

Patched versions

pypdf

PyPI

< 6.13.1

6.13.1

pypdf

pypdf_project

< 6.13.1

6.13.1

Description

Impact

An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with threads/articles into a writer.

Patches

This has been fixed in pypdf==6.13.1.

Workarounds

If users cannot upgrade yet, consider applying the changes from PR #3839.

NVD description

pypdf 的其他漏洞

查看全部 →