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CVE-2026-41313 Detail

Description

pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads to long runtimes. This requires loading a PDF with a large trailer `/Size` value in incremental mode. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  GitHub, Inc.
CVSS-B 4.8 MEDIUM
Vector:  CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/py-pdf/pypdf/commit/c50a0104cf083356f7c7f5d61410466a57f5c88a GitHub, Inc.
https://github.com/py-pdf/pypdf/pull/3735 GitHub, Inc.
https://github.com/py-pdf/pypdf/releases/tag/6.10.2 GitHub, Inc.
https://github.com/py-pdf/pypdf/security/advisories/GHSA-4pxv-j86v-mhcw GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-834 Excessive Iteration GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-41313
NVD Published Date:
04/22/2026
NVD Last Modified:
04/22/2026
Source:
GitHub, Inc.