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VULNERABILITIES

CVE-2026-59938 Details

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with declared image size values that are much too large compared to the actual data, causing large memory usage in pypdf image parsing. This issue is fixed in version 6.14.0.

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/c64583be16b8e8763d8777075f8ecbf382014b7a [email protected]Patch
https://github.com/py-pdf/pypdf/pull/3888 [email protected]Issue TrackingPatch
https://github.com/py-pdf/pypdf/releases/tag/6.14.0 [email protected]ProductRelease Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-5qjq-93h5-hrgp [email protected]PatchVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-789Memory Allocation with Excessive Size Value[email protected]

Affected Products

ProductVersions
pypdf project pypdf
< 6.14.0

CPE

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

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-59938
NVD Published Date:
Jul 8, 2026
NVD Last Modified:
Jul 9, 2026
Source:
[email protected]
CVE-2026-59938 Details - Not Deferred