{"id":"CVE-2026-24688","aliases":["GHSA-2q4j-m29v-hq73","PYSEC-2026-1827"],"url":"https://o3.security/vulnerability/CVE-2026-24688","summary":"pypdf has possible Infinite Loop when processing outlines/bookmarks","details":"pypdf is a free and open-source pure-python PDF library. An attacker who uses an infinite loop vulnerability that is present in versions prior to 6.6.2 can craft a PDF which leads to an infinite loop. This requires accessing the outlines/bookmarks. This has been fixed in pypdf 6.6.2. If projects cannot upgrade yet, consider applying the changes from PR #3610 manually.","published":"2026-01-27T19:44:06.173Z","modified":"2026-08-12T03:51:08.278940152Z","cvss":null,"epss":{"score":0.00403,"percentile":0.33594,"asOf":"2026-09-08"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"pypdf","fixedVersion":"6.6.2"}],"fix":{"url":"https://github.com/py-pdf/pypdf/commit/b1282f8dcdc1a7b41ceab6740ffddfdf31b1fec1","label":"py-pdf/pypdf@b1282f8"},"references":[{"type":"WEB","url":"https://github.com/py-pdf/pypdf/releases/tag/6.6.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24688.json"},{"type":"ADVISORY","url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-2q4j-m29v-hq73"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-24688"},{"type":"FIX","url":"https://github.com/py-pdf/pypdf/commit/b1282f8dcdc1a7b41ceab6740ffddfdf31b1fec1"},{"type":"FIX","url":"https://github.com/py-pdf/pypdf/pull/3610"},{"type":"PACKAGE","url":"https://github.com/py-pdf/pypdf"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:08.278940152Z"}}