CVE-2025-66019 - pypdf manipulated LZWDecode streams can exhaust RAM

CVE ID : CVE-2025-66019 Published : Nov. 26, 2025, 12:15 a.m. | 47 minutes ago Description : pypdf is a free and open-source pure-python PDF library. Prior to version 6.4.0, an attacker who uses this vulnerability can craft a PDF which leads to a memory usage of up to 1 GB per stream. This requires parsing the content stream of a page using the LZWDecode filter. This issue has been patched in version 6.4.0. Severity: 6.6 | MEDIUM Visit the link for more details, such as CVSS details, affected products, timeline, and more...

Source: Telegram CVE Monitor