CVE-2026-115580: pypdf < 6.21.2

CVE-2026-115580 affects pypdf. Affected range: < 6.21.2. Fixed version: 6.21.2.

Affected technology

pypdf · < 6.21.2
py-pdf

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · Passive user interaction

What an attacker can do

An attacker can craft a PDF with a standard cross-reference table whose declared entry count exceeds what the file can contain, causing excessive processing and long runtimes when the file is opened. Vendor/CNA’s CVSS 4.0 assessment (base score 7.1/10) rates confidentiality and integrity impact as none; availability impact as high.

Published 24-Oct-2026 01:45 UTC

CWE: CWE-834
Product: pypdf
KEV: no

Provenance

GitHub Advisory Database · Source record · observed 2026-10-24 01:45:06.114611+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-115580.html