{"id":"CVE-2026-113793","published":"2026-10-21T16:17:27.327","lastModified":"2026-10-22T16:46:48.920","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.20.1, removing an object from a crafted cyclic PDF tree, such as an outline item, can enter an infinite loop and block the current process. This issue is fixed in version 6.20.1.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-835"],"vendors":[],"products":[],"references":[{"url":"https://github.com/py-pdf/pypdf/commit/c9c35b4471c2eb5fe078094f6c816e69d4ed25a0","tags":[]},{"url":"https://github.com/py-pdf/pypdf/pull/4188","tags":[]},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.20.1","tags":[]},{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-9mx8-4j7g-633p","tags":[]}],"exploitRefs":[{"url":"https://github.com/py-pdf/pypdf/commit/c9c35b4471c2eb5fe078094f6c816e69d4ed25a0","tags":[]},{"url":"https://github.com/py-pdf/pypdf/pull/4188","tags":[]},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.20.1","tags":[]},{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-9mx8-4j7g-633p","tags":[]}],"hasPoc":true,"ai":null}