CVE-2026-54530: pypdf: Possible infinite loop when retrieving fonts for layout-mode text extraction

June 16, 2026

An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires extracting the text in layout mode.

References

github.com/advisories/GHSA-52x6-gq3r-vpf4
github.com/py-pdf/pypdf/pull/3830
github.com/py-pdf/pypdf/releases/tag/6.13.0
github.com/py-pdf/pypdf/security/advisories/GHSA-52x6-gq3r-vpf4
nvd.nist.gov/vuln/detail/CVE-2026-54530

Code Behaviors & Features

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