Security Advisories
CVEs affecting projects tracked on Release Alert, from NVD & OSV.
CVE-2026-48156
3.3
LOWCVSS v3
Published
May 28, 2026
Affected
1 project
Assigned by
GitHub
Severity scale
010
Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with /W [0 0 0] values and large /Size values. This vulnerability is fixed in 6.12.0.
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< 6.12.0NVD