CVE-2026-59935

Summary

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.

Affected Software

Weaknesses

• CWE-835: CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

References

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

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