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PYSEC-2026-1831 pypdf can exhaust RAM via manipulated LZWDecode streams

🗓️ 07 Jul 2026 16:03:08Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 6 Views

pypdf memory exhaustion via crafted Lempel Ziv Welch decode streams; fixed in version six one three.

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07 Jul 2026 17:46Current
5.8Medium risk
Vulners AI Score5.8
CVSS 48.7
EPSS0.00411
6