{"cve":"CVE-2026-24688","nvd":{"published":"2026-01-27T20:16:24.193","modified":"2026-06-17T10:23:25.590","status":"Analyzed","description":"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.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":5.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","score":4.3},"cwes":["CWE-835"],"references":["https://github.com/py-pdf/pypdf/commit/b1282f8dcdc1a7b41ceab6740ffddfdf31b1fec1","https://github.com/py-pdf/pypdf/pull/3610","https://github.com/py-pdf/pypdf/releases/tag/6.6.2","https://github.com/py-pdf/pypdf/security/advisories/GHSA-2q4j-m29v-hq73"],"products":["pypdf_project:pypdf"],"source":"nvd","synced_at":"2026-10-19T22:21:16.563232421+00:00"},"epss":{"cve":"CVE-2026-24688","score":0.00445,"percentile":0.38709,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-2q4j-m29v-hq73","url":"https://osv.dev/vulnerability/GHSA-2q4j-m29v-hq73","summary":"pypdf has possible Infinite Loop when processing outlines/bookmarks","modified":"2026-09-10T03:50:32.300137224Z","packages":[{"ecosystem":"PyPI","name":"pypdf","purl":"pkg:pypi/pypdf","ranges":["<6.6.2"],"fixed":["6.6.2"]}]},{"id":"PYSEC-2026-1827","url":"https://osv.dev/vulnerability/PYSEC-2026-1827","summary":"pypdf has possible Infinite Loop when processing outlines/bookmarks","modified":"2026-07-07T17:47:50.536225470Z","packages":[{"ecosystem":"PyPI","name":"pypdf","purl":"pkg:pypi/pypdf","ranges":["<6.6.2"],"fixed":["6.6.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}