Resource exhaustion in PyPDF - #VU132045
Published: May 21, 2026
Vulnerability identifier: #VU132045
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Pypdf Project
Affected software:
PyPDF
PyPDF
Detailed vulnerability description
The vulnerability allows a remote attacker to cause excessive memory consumption.
The vulnerability exists due to uncontrolled resource consumption in the text extraction layout mode when processing a crafted PDF with large character offsets. A remote attacker can supply a specially crafted PDF to cause excessive memory consumption.
Exploitation requires text extraction to be performed in layout mode.
Remediation
Install security update from vendor's website.