Memory Consumption Vulnerability in PyPDF Library
CVE-2026-113795

6MEDIUM

Key Information:

Vendor

Py-PDF

Status
PyPDF
Vendor
CVE Published:
21 October 2026

What is CVE-2026-113795?

The PyPDF library, a popular open-source tool for handling PDF files, is susceptible to a memory consumption vulnerability. When processing crafted PDF streams containing an excessive number of filters or large data sizes, certain versions can lead to significant memory overload. This issue has been resolved in version 6.20.0, which mitigates the risk associated with the handling of complex PDF structures. Users are urged to update to the latest version to enhance security and performance.

Affected Version(s)

pypdf < 6.20.0

References

https://github.com/py-pdf/pypdf/security/advisories/GHSA-...
x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/4173
x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/80a84d4be6022d9108...
x_refsource_MISC

CVSS V4

Score:
6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.