{"id":"CVE-2026-119206","published":"2026-10-29T21:17:19.817","lastModified":"2026-10-29T21:17:19.817","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can take excessive time to retrieve page labels from a crafted PDF containing a flat page-label number tree with many ranges. The page_labels property resolves each page independently and repeatedly scans the same /Nums array from the beginning, causing work to grow with both the page count and the number of label ranges. This issue is fixed in version 6.21.3.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-400"],"vendors":[],"products":[],"references":[{"url":"https://github.com/py-pdf/pypdf/commit/b891fef37000cd86baa6e9848a3387d080b3b03e","tags":[]},{"url":"https://github.com/py-pdf/pypdf/pull/4251","tags":[]},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.21.3","tags":[]},{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-42gh-23hr-vphw","tags":[]}],"exploitRefs":[{"url":"https://github.com/py-pdf/pypdf/commit/b891fef37000cd86baa6e9848a3387d080b3b03e","tags":[]},{"url":"https://github.com/py-pdf/pypdf/pull/4251","tags":[]},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.21.3","tags":[]},{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-42gh-23hr-vphw","tags":[]}],"hasPoc":true,"ai":null}