CVE-2026-119206
HIGH—CVSS v3
—CVSS v2
—
EPSS (exploit probability)
CWE-400CWE
Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can take excessive time to retrieve page labels from a crafted PDF containing a flat page-label number tree with many ranges. The page_labels property resolves each page independently and repeatedly scans the same /Nums array from the beginning, causing work to grow with both the page count and the number of label ranges. This issue is fixed in version 6.21.3.
Affected routers (0)
No routers currently mapped to this CVE in our database.