CVE-2026-59937 — pypdf: Possible long runtimes for repeated malformed cross-reference entries
pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with repeated malformed cross-reference streams that cause pypdf to spend l…
Published: 2026-07-08 · CVSS: 6.9 · CVSS 4.0
pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with repeated malformed cross-reference streams that cause pypdf to spend long runtimes recovering broken cross-reference table entries. This issue is fixed in version 6.14.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7