CVE-2026-48156 — pypdf: Possible long runtimes for zero-only width values in cross-reference streams
pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cro…
Published: 2026-05-28 · CVSS: 5.1 · CVSS 4.0
pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with /W [0 0 0] values and large /Size values. This vulnerability is fixed in 6.12.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7