CVE-2026-59936: pypdf: Possible infinite loop for not terminated inline images

July 23, 2026

An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires parsing the content stream of a page with a not terminated inline image, as done when extracting the page text for example.

References

github.com/advisories/GHSA-5xf7-4p34-54qr
github.com/py-pdf/pypdf/commit/ec3b14596186c40caca7cf8ab9b2155203e01b5b
github.com/py-pdf/pypdf/pull/3891
github.com/py-pdf/pypdf/releases/tag/6.14.1
github.com/py-pdf/pypdf/security/advisories/GHSA-5xf7-4p34-54qr
nvd.nist.gov/vuln/detail/CVE-2026-59936

Code Behaviors & Features

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