CVE-2026-119204
HIGH—CVSS v3
—CVSS v2
—
EPSS (exploit probability)
CWE-400CWE
Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.4, pypdf can consume excessive memory while parsing a crafted PDF page tree containing many shared resources. Page-tree flattening copies page dictionary and inherited resource entries without a document-wide entry budget, allowing the crafted resource structure to cause disproportionate allocations. This issue is fixed in version 6.21.4.
Affected routers (0)
No routers currently mapped to this CVE in our database.