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VULNERABILITIES

CVE-2026-41168 Details

Description

pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.1 can craft a PDF which leads to long runtimes. This requires cross-reference streams with wrong large `/Size` values or object streams with wrong large `/N` values. This has been fixed in pypdf 6.10.1. As a workaround, one may apply the changes from the patch manually.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/py-pdf/pypdf/commit/62338e9d36419cf193ccec7331784f45df1d70b3 [email protected]Patch
https://github.com/py-pdf/pypdf/pull/3733 [email protected]Issue TrackingPatch
https://github.com/py-pdf/pypdf/releases/tag/6.10.1 [email protected]ProductRelease Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-jj6c-8h6c-hppx [email protected]MitigationPatchVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-834Excessive Iteration[email protected]

Affected Products

ProductVersions
pypdf project pypdf
< 6.10.1

CPE

  • cpe:2.3:a:pypdf_project:pypdf:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-41168
NVD Published Date:
Apr 22, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-41168 Details - Not Deferred