VULNERABILITY INTELLIGENCE

CVE-2026-84311

CVSS score3.3 LOW
EPSS probability0.14%
CISA KEVNot currently listed
Published2026-09-01
Last modified2026-10-05
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

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.

Weakness classification

  • security-advisories@github.com: CWE-834

Primary references