CVE-2026-113795: CWE-400: Uncontrolled Resource Consumption in py-pdf pypdf
Description
A vulnerability in the pypdf Python library prior to version 6.20.0 allows crafted PDF streams with many or complex filters to cause excessive memory consumption. This uncontrolled resource consumption issue has been addressed in version 6.20.0.
CVSS v4.0
Score 6.0medium
Affected software
py-pdf
pypdf
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The pypdf library, a pure-Python PDF processing tool, contains an uncontrolled resource consumption vulnerability (CWE-400) in versions before 6.20.0. When processing a specially crafted PDF stream that includes a large number of filters or multiple filters that handle large data volumes, the library can consume excessive memory. This can degrade performance or cause denial of service conditions. The issue is resolved in version 6.20.0.
Potential Impact
Exploitation of this vulnerability can lead to high memory usage on systems processing malicious PDF files, potentially causing application crashes or denial of service. There is no indication of code execution or data corruption. The CVSS 4.0 score is 6.0 (medium severity), reflecting the impact on availability through resource exhaustion.
Mitigation Recommendations
Upgrade to pypdf version 6.20.0 or later, where this uncontrolled resource consumption vulnerability has been fixed. No other mitigation is specified or required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-10-20T17:39:41.373Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ad8e5564d27ba8daac24092
Added to database: 10/21/2026, 16:16:22 UTC
Last enriched: 10/21/2026, 16:30:21 UTC
Last updated: 10/21/2026, 17:15:41 UTC
Views: 4
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