Security Advisories
CVEs affecting projects tracked on Release Alert, from NVD & OSV.
CVE-2026-28351
5.3
MEDIUMCVSS v3
Published
February 27, 2026
Affected
1 project
Assigned by
GitHub
Severity scale
010
Description
pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.4, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream using the RunLengthDecode filter. This has been fixed in pypdf 6.7.4. As a workaround, consider applying the changes from PR #3664.
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< 6.7.4NVD