HIGH 7.1 NVD
CVE-2026-119207
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory when strict mode loads a crafted invalid PDF dictio
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory when strict mode loads a crafted invalid PDF dictionary. Nested parsing failures add repeated exception text to newly raised errors, allowing a small malformed dictionary to amplify into very large error messages. This issue is fixed in version 6.21.3.
References
- https://github.com/py-pdf/pypdf/commit/64270258c0eced720f7960aecf8cef31afd39f8d
- https://github.com/py-pdf/pypdf/pull/4265
- https://github.com/py-pdf/pypdf/releases/tag/6.21.3
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vqv-7265-gm2w
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-10-29 via NVD.
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