{"id":"ghsa-ghsa-gmh7-3g9r-mjh5","seq":661325,"kind":"advisory","title":"pypdf: Possible long runtimes for large xref table header limits","url":"https://github.com/advisories/GHSA-gmh7-3g9r-mjh5","permalink":"https://vulnpulse.app/items/ghsa-ghsa-gmh7-3g9r-mjh5","summary":"影響: pip:pypdf < 6.21.2 → 6.21.2\nAn attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires opening a file with large/wrong upper limits in the xref table. Patches This has been fixed in [pypdf==6.21.2](https://github.com/py-pdf/pypdf/releases/tag/6.21.2). Workarounds If you cannot upgrade yet, consider applying the changes from PR [#4239](https://github.com/py-pdf/pypdf/pull/4239).","severity":"high","techs":["python"],"cves":["CVE-2026-115580"],"tags":["GHSA-gmh7-3g9r-mjh5","pypdf"],"source":{"id":"ghsa","name":"GitHub Advisory Database"},"published_at":"2026-10-23T20:54:12.000Z","fetched_at":"2026-10-24T04:50:51.468Z"}