PT-2025-48100 · Pypi+1 · Pypdf+1

Published 2025-11-24 · Updated 2026-04-17 · CVE-2025-66019

Positive Technologies (AI Summary)

CVSS v4.0

6.6

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U

Name of the Vulnerable Software and Affected Versions pypdf versions prior to 6.4.0

Description pypdf is a free and open-source pure-python PDF library. An attacker can create a malicious PDF file that causes excessive memory consumption, up to 1 GB per stream, when parsing the content stream of a page using the LZWDecode filter.

Recommendations Update to version 6.4.0 or later.

Exploit

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-409

CWE-400

Related Identifiers

CVE-2025-66019

GHSA-M449-CWJH-6PW7

OPENSUSE-SU-2025:15776-1

Affected Products

Red Os

Pypdf

References · 21

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66019.json · Exploit
• https://osv.dev/vulnerability/openSUSE-SU-2025:15776-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-66019 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-66019 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-66019 · Security Note
• https://cve.org/CVERecord?id=CVE-2025-66019 · Security Note
• https://ubuntu.com/security/CVE-2025-66019 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-m449-cwjh-6pw7 · Vendor Advisory
• https://github.com/py-pdf/pypdf · Note
• https://github.com/py-pdf/pypdf/security/advisories/GHSA-m449-cwjh-6pw7 · Note
• https://github.com/py-pdf/pypdf/commit/96186725e5e6f237129a58a97cd19204a9ce40b2 · Note
• https://github.com/py-pdf/pypdf/releases/tag/6.4.0 · Note
• https://github.com/py-pdf/pypdf/security/advisories/GHSA-jfx9-29x2-rv3j · Note
• https://twitter.com/VulmonFeeds/status/1993573405770014821 · Twitter Post
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/uyazvimost-python-pypdf2-cve-2025-66019-7.3 · Note