CVE-2026-48155: pypdf: Possible large memory usage for large offsets for layout mode text

June 12, 2026

An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets.

References

github.com/advisories/GHSA-cj93-chg6-vgv8
github.com/py-pdf/pypdf/pull/3790
github.com/py-pdf/pypdf/releases/tag/6.12.0
github.com/py-pdf/pypdf/security/advisories/GHSA-cj93-chg6-vgv8
nvd.nist.gov/vuln/detail/CVE-2026-48155

Code Behaviors & Features

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