CVE-2026-84311

LowCVSS 3.3/10Last modified Oct 5, 2026

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.16.1, an attacker can craft a PDF that causes pypdf/_page.py PageObject._extract_text and PageObject.extract_xform_text to traverse a directed acyclic graph of reused form XObjects in which each form invokes a child multiple times, creating exponentially many traversal paths and causing long runtimes and large memory consumption. This issue is fixed in version 6.16.1.

Metrics

CVSS 3.1 3.3/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-834

Affected software

No affected versions have been published.

Timeline

Published
Sep 1, 2026
Last modified
Oct 5, 2026
NVD status
Analyzed

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CVE-2026-84311: Low severity, CVSS 3.3 | Vulnix