CVE-2026-59935

Description

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.

Weakness Type (CWE)

CWE-835 CWE-835

References

Other References

https://github.com/py-pdf/pypdf/commit/5a33a46416aa1ae6c025ff90a3cca57631fdafd2 https://github.com/py-pdf/pypdf/pull/3892 https://github.com/py-pdf/pypdf/releases/tag/6.14.2 https://github.com/py-pdf/pypdf/security/advisories/GHSA-g867-7843-wf8q

Frequently Asked Questions

What is CVE-2026-59935? +

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.

How do I check if I'm vulnerable to CVE-2026-59935? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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