VULNERABILITY INTELLIGENCE
CVE-2026-115580
EPSS probability0.41%
CISA KEVNot currently listed
Published2026-10-23
Last modified2026-10-29
Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, 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. This issue is fixed in version 6.21.2.
Weakness classification
- security-advisories@github.com: CWE-834