CVE-2026-113791 — pypdf: Possible large memory usage when parsing content streams
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 …
Published: 2026-10-21 · CVSS: 6.0 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7