CVE-2026-119209

The record

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory while opening a crafted PDF containing cross-reference streams that declare very large entry counts. Highly compressible streams and /Prev chains can multiply the number of parsed entries across a document, while negative /Index counts can bypass the existing per-stream clamp. This issue is fixed in version 6.21.3.

Affected packages

Related vulnerabilities

• CVE-2026-63341 Aedes is an MQTT broker that can run on any stream server. CWE-400
• CVE-2026-62300 Filecoin Pin is an IPFS Pinning Service API implementation that pins to Filecoin's PDP… CWE-400
• CVE-2026-62254 LibreDWG is a free C library to read and write DWG files. CWE-400
• CVE-2026-62250 LibreDWG is a free C library to read and write DWG files. CWE-400
• CVE-2026-62303 Pistache is a high-performance REST toolkit written in C++. CWE-400
• CVE-2026-62160 Daptin is a GraphQL/JSON-API headless CMS. CWE-400
• CVE-2026-61848 Crass is a Ruby CSS parser that's fully compliant with the CSS Syntax Level 3… CWE-400
• CVE-2026-61854 VoiceSentinel is a real-time voice moderation system for Minecraft servers. CWE-400