CVE-2026-113794

pypdf is a free and open-source pure-python PDF library. Prior to 6.20.0, an attacker can craft an incomplete PDF that ends inside a standard cross-reference table, causing pypdf to mishandle the unexpected end of file and enter an infinite loop. This issue is fixed in version 6.20.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/py-pdf/pypdf/commit/37e1cd681744bac38b159f7e1c614eee8d639c58
https://github.com/py-pdf/pypdf/issues/4169
https://github.com/py-pdf/pypdf/pull/4170
https://github.com/py-pdf/pypdf/releases/tag/6.20.0
https://github.com/py-pdf/pypdf/security/advisories/GHSA-39mj-jf6j-2qj3

Configurations

No configuration.

History

21 Oct 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-21 16:17

Updated : 2026-10-28 02:17

NVD link : CVE-2026-113794

Mitre link : CVE-2026-113794

CVE.ORG link : CVE-2026-113794

JSON object : View

Products Affected

No product.

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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