{"id":"CVE-2026-113791","published":"2026-10-21T16:17:27.027","lastModified":"2026-10-22T16:46:48.920","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF containing a content stream with many small operations, causing parsing to consume large amounts of memory. This issue is fixed in version 6.21.0.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-400","CWE-770"],"vendors":[],"products":[],"references":[{"url":"https://github.com/py-pdf/pypdf/commit/18bd2981a74479483a0b9507602c58a63d6c9b12","tags":[]},{"url":"https://github.com/py-pdf/pypdf/pull/4218","tags":[]},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.21.0","tags":[]},{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-cgf9-327m-v77c","tags":[]}],"exploitRefs":[{"url":"https://github.com/py-pdf/pypdf/commit/18bd2981a74479483a0b9507602c58a63d6c9b12","tags":[]},{"url":"https://github.com/py-pdf/pypdf/pull/4218","tags":[]},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.21.0","tags":[]},{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-cgf9-327m-v77c","tags":[]}],"hasPoc":true,"ai":null}