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code.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-29966","reference_id":"","reference_type":"","scores":[{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.645","published_at":"2026-05-05T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64372","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64526","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64525","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64426","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64456","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64415","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64464","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64479","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64495","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64483","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64455","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64489","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64501","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64493","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00467","scoring_system":"epss","scoring_elements":"0.64513","published_at":"2026-04-24T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-29966"},{"reference_url":"https://security.archlinux.org/ASA-202106-3","reference_id":"ASA-202106-3","reference_type":"","scores":[],"url":"https://security.archlinux.org/ASA-202106-3"},{"reference_url":"https://security.archlinux.org/AVG-2018","reference_id":"AVG-2018","reference_type":"","scores":[{"value":"High","scoring_system":"archlinux","scoring_elements":""}],"url":"https://security.archlinux.org/AVG-2018"},{"reference_url":"https://security.gentoo.org/glsa/202107-09","reference_id":"GLSA-202107-09","reference_type":"","scores":[],"url":"https://security.gentoo.org/glsa/202107-09"},{"reference_url":"https://www.mozilla.org/en-US/security/advisories/mfsa2021-23","reference_id":"mfsa2021-23","reference_type":"","scores":[{"value":"high","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2021-23"},{"reference_url":"https://usn.ubuntu.com/4978-1/","reference_id":"USN-4978-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/4978-1/"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/77942?format=json","purl":"pkg:ebuild/www-client/firefox@78.11.0","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:ebuild/www-client/firefox@78.11.0"},{"url":"http://public2.vulnerablecode.io/api/packages/77943?format=json","purl":"pkg:ebuild/www-client/firefox@89.0","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:ebuild/www-client/firefox@89.0"}],"aliases":["CVE-2021-29966"],"risk_score":4.0,"exploitability":"0.5","weighted_severity":"8.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-vysb-zn1g-tuf5"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/49745?format=json","vulnerability_id":"VCID-y2pv-1tm3-nqak","summary":"Multiple 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