Security Advisories
CVEs affecting projects tracked on Release Alert, from NVD & OSV.
CVE-2026-33123
6.5
MEDIUMCVSS v3
Published
March 20, 2026
Affected
1 project
Assigned by
GitHub
Severity scale
010
Description
pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.1 allow an attacker to craft a malicious PDF which leads to long runtimes and/or large memory usage. Exploitation requires accessing an array-based stream with many entries. This issue has been fixed in version 6.9.1.
py-pdf/pypdf
GitHubA pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files
GitHubA pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files< 6.9.1NVD