{"action":"Upgrade pikepdf to 2.10.0 or later.","affected":[{"fixed":"2.10.0","introduced":"1.3.0"}],"component":"pikepdf","cve_ids":["CVE-2021-29421"],"ecosystem":"PyPI","epss":0.01681,"exploited":false,"fixed_versions":["2.10.0"],"ghsa_id":"GHSA-ccgm-3xw4-h5p8","id":"tcs_01M5KFCPY6TT8F5N2STBJWVF64","modified_at":"2026-09-10T03:49:03.241318694Z","published_at":"2021-04-20T16:30:03Z","references":["https://osv.dev/vulnerability/GHSA-ccgm-3xw4-h5p8","https://nvd.nist.gov/vuln/detail/CVE-2021-29421","https://github.com/pikepdf/pikepdf/commit/3f38f73218e5e782fe411ccbb3b44a793c0b343a","https://github.com/advisories/GHSA-ccgm-3xw4-h5p8","https://github.com/pikepdf/pikepdf","https://github.com/pypa/advisory-database/tree/main/vulns/pikepdf/PYSEC-2021-34.yaml","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/36P4HTLBJPO524WMQWW57N3QRF4RFSJG","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3QFLBBYGEDNXJ7FS6PIWTVI4T4BUPGEQ"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-ccgm-3xw4-h5p8","url":"https://osv.dev/vulnerability/GHSA-ccgm-3xw4-h5p8"}],"summary":"Improper Restriction of XML External Entity Reference in pikepdf"}