CVE-2026-48156

LowCVSS 3.3/10Last modified Oct 14, 2026

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with /W [0 0 0] values and large /Size values. This vulnerability is fixed in 6.12.0.

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: May 28, 2026
Last modified: Oct 14, 2026
NVD status: Analyzed

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