CVE-2026-119209
UNKNOWN
NVD
CVSS Score
0
Severity
UNKNOWN
Published
Oct 29, 2026
Vendor
unknown
Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory while opening a crafted PDF containing cross-reference streams that declare very large entry counts. Highly compressible streams and /Prev chains can multiply the number of parsed entries across a document, while negative /Index counts can bypass the existing per-stream clamp. This issue is fixed in version 6.21.3.