Security Advisories
CVEs affecting projects tracked on Release Alert, from NVD & OSV.
CVE-2026-27025
5.5
MEDIUMCVSS v3
Published
February 20, 2026
Affected
1 project
Assigned by
GitHub
Severity scale
010
Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text extraction. This vulnerability is fixed in 6.7.1.
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< 6.7.1NVD