CVEvulnerability

CVE-2026-84311

4.8 MEDIUM Published 2026-09-01 Modified 2026-10-05 Official page ↗
Status
Analyzed
Published
2026-09-01
Last modified
2026-10-05
Assigner
[email protected]
CVSS 4.0 ([email protected])
4.8 MEDIUM — CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
3.3 LOW — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Weaknesses
CWE-834

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.

Affected configurations

• pypdf project pypdf (< 6.16.1)

Related

Weakness · CWE (1)

  • CWE-834 Excessive Iteration weakness

References