CVE-2026-49461

UNKNOWN 0.0

pypdf: Possible large memory usage for form XObjects during text extraction

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting the text of a page which contains a form XObject with self-references. This vulnerability is fixed in 6.12.2.

CWE	CWE-400
Vendor	py-pdf
Product	pypdf
Published	Jun 22, 2026

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Affected Versions

py-pdf / pypdf

< 6.12.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/py-pdf/pypdf/security/advisories/GHSA-j543-4vmf-qm7v github.com: https://github.com/py-pdf/pypdf/pull/3805 github.com: https://github.com/py-pdf/pypdf/releases/tag/6.12.2