CVE-2026-31826 — pypdf: manipulated stream length values can exhaust RAM
pypdf is a free and open-source pure-python PDF library. Prior to 6.8.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires…
Published: 2026-03-10 · CVSS: 6.8 · CVSS 4.0
pypdf is a free and open-source pure-python PDF library. Prior to 6.8.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing a content stream with a rather large /Length value, regardless of the actual data length inside the stream. This vulnerability is fixed in 6.8.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7