High 8.7Published Jul 8, 2026

CVE-2026-59935pypdf: Possible infinite loop for not terminated inline images (ASCII85 and ASCIIHex filter)

Updated under an hour ago (Oct 27, 2026, 6:20 AM ET)

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It affects py-pdf pypdf and 1 other product. Add what you run to find out whether that includes you.

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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 6.14.2, an attacker can craft a PDF with a page content stream containing a not terminated inline image that uses the ASCII85 or ASCIIHex filters, causing an infinite loop during parsing such as when extracting page text. This issue is fixed in version 6.14.2.

CVSS: 8.7 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-835
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: Analyzed
Record last updated: Jul 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

py-pdf pypdf py_pdf:pypdf (from the name)	before 6.14.2	CNA record
pypdf_project pypdf pypdf_project:pypdf	before 6.14.2	NVD

References

References

https://github.com/py-pdf/pypdf/security/advisories/GHSA-g867-7843-wf8q	x-refsource-confirm, patch, vendor-advisory
https://github.com/py-pdf/pypdf/pull/3892	x-refsource-misc, issue-tracking, patch
https://github.com/py-pdf/pypdf/commit/5a33a46416aa1ae6c025ff90a3cca57631fdafd2	x-refsource-misc, patch
https://github.com/py-pdf/pypdf/releases/tag/6.14.2	x-refsource-misc, product, release-notes

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.