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CVE-2026-113791

pypdf: Possible large memory usage when parsing content streams PUBLISHED

Description (CNA)

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF containing a content stream with many small operations, causing parsing to consume large amounts of memory. This issue is fixed in version 6.21.0.

Affected (CNA)

Vendor / productVersions
py-pdf / pypdfaffected < 6.21.0

CWE

CWE-400, CWE-770

References