CVE-2026-54651 — pypdf: Possible infinite loop when processing threads/articles in writer
pypdf is a free and open-source pure-python PDF library. Prior to 6.13.1, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires …
Published: 2026-06-22 · CVSS: 6.9 · CVSS 4.0
pypdf is a free and open-source pure-python PDF library. Prior to 6.13.1, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with threads/articles into a writer. This vulnerability is fixed in 6.13.1.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7