Medium 5.3Published Jul 8, 2026

CVE-2026-59938pypdf is a free and open-source pure-python PDF library.

Updated under an hour ago (2026-10-19 08:23 UTC)

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It affects pypdf_project pypdf. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for pypdf_project pypdf

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-789
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jul 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

pypdf_project pypdf pypdf_project:pypdf	before 6.14.0	NVD

References

https://github.com/py-pdf/pypdf/commit/c64583be16b8e8763d8777075f8ecbf382014b7apatch
https://github.com/py-pdf/pypdf/pull/3888issue-tracking, patch
https://github.com/py-pdf/pypdf/releases/tag/6.14.0product, release-notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-5qjq-93h5-hrgppatch, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.