Low 2.3Published Oct 21, 2026

CVE-2026-113786pypdf: Unvalidated JPEG image data loading

Updated under an hour ago (2026-10-22 08:00 UTC)

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It affects py-pdf 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 py-pdf pypdf

Exploited in the last 30 days

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.1, an attacker can craft a PDF containing image data labeled with the /DCTDecode filter that causes Pillow to select and invoke an unintended image parser when the image is loaded. Environments without the optional Pillow dependency are not affected. This issue is fixed in version 6.21.1.

CVSS: 2.3 LOW (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Weakness (CWE): CWE-20, CWE-183
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Received
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 21, 2026

Affected products

Affected products

py-pdf pypdf py_pdf:pypdf (from the name)	before 6.21.1	CNA record

References

https://github.com/py-pdf/pypdf/security/advisories/GHSA-5hx5-vpf9-5wcvx-refsource-confirm
https://github.com/py-pdf/pypdf/pull/4222x-refsource-misc
https://github.com/py-pdf/pypdf/commit/512d8eb94eb04be1d1c90504e6da2dcef8679e07x-refsource-misc
https://github.com/py-pdf/pypdf/releases/tag/6.21.1x-refsource-misc

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.