{"id":"CVE-2021-33926","aliases":["EUVD-2023-0204","GHSA-47p5-p3jw-w78w","PYSEC-2023-289"],"status":"published","title":"Server-Side Request Forgery in Plone CMS","description":"An issue in Plone CMS v. 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.1rc2, 5.1rc1, 5.1b4, 5.1b3, 5.1b2, 5.1a2, 5.1a1, 5.1.7, 5.1.6, 5.1.5, 5.1.4, 5.1.2, 5.1.1 5.1, 5.0rc3, 5.0rc2, 5.0rc1, 5.0.9, 5.0.8, 5.0.7, 5.0.6, 5.0.5, 5.0.4, 5.0.3, 5.0.2, 5.0.10, 5.0.1, 5.0, 4.3.9, 4.3.8, 4.3.7, 4.3.6, 4.3.5, 4.3.4, 4.3.3, 4.3.20, 4 allows attacker to access sensitive information via the RSS feed protlet.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01013,"percentile":0.63697,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-918"],"published":"2023-02-17T00:00:00Z","modified":"2026-10-24T10:30:54Z","fixes":[{"ecosystem":"PyPI","package":"plone","fixed_in":["5.2.5"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"plone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3"},{"fixed":"5.2.5"}]}]},{"source":"osv","ecosystem":"PyPI","package":"plone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3"},{"fixed":"5.2.5"}]}],"versions":["4.3","4.3.1","4.3.10","4.3.11","4.3.12","4.3.13","4.3.14","4.3.15","4.3.16","4.3.17","4.3.18","4.3.19","4.3.2","4.3.20","4.3.3","4.3.4","4.3.5","4.3.6","4.3.7","4.3.8","4.3.9","5.0","5.0.1","5.0.10","5.0.2","5.0.3","5.0.4","5.0.5","5.0.6","5.0.7","5.0.8","5.0.9","5.0a1","5.0a2","5.0a3","5.0b1","5.0b2","5.0b3","5.0b4","5.0rc1","5.0rc2","5.0rc3","5.1.0","5.1.1","5.1.2","5.1.3","5.1.4","5.1.5","5.1.6","5.1.7","5.1a1","5.1a2","5.1b1","5.1b2","5.1b3","5.1b4","5.1rc1","5.1rc2","5.2.0","5.2.1","5.2.2","5.2.3","5.2.4","5.2a1","5.2a2","5.2b1","5.2rc1","5.2rc2","5.2rc3","5.2rc4","5.2rc5"]},{"source":"osv","ecosystem":"PyPI","package":"plone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3"},{"fixed":"5.2.5"}]}],"versions":["4.3","4.3.1","4.3.10","4.3.11","4.3.12","4.3.13","4.3.14","4.3.15","4.3.16","4.3.17","4.3.18","4.3.19","4.3.2","4.3.20","4.3.3","4.3.4","4.3.5","4.3.6","4.3.7","4.3.8","4.3.9","5.0","5.0.1","5.0.10","5.0.2","5.0.3","5.0.4","5.0.5","5.0.6","5.0.7","5.0.8","5.0.9","5.0a1","5.0a2","5.0a3","5.0b1","5.0b2","5.0b3","5.0b4","5.0rc1","5.0rc2","5.0rc3","5.1.0","5.1.1","5.1.2","5.1.3","5.1.4","5.1.5","5.1.6","5.1.7","5.1a1","5.1a2","5.1b1","5.1b2","5.1b3","5.1b4","5.1rc1","5.1rc2","5.2.0","5.2.1","5.2.2","5.2.3","5.2.4","5.2a1","5.2a2","5.2b1","5.2rc1","5.2rc2","5.2rc3","5.2rc4","5.2rc5"]}],"products":[{"vendor":"plone","product":"plone"}],"references":[{"url":"https://plone.org/security/hotfix/20210518","tags":["x_transferred","Release Notes","advisory","web"]},{"url":"https://github.com/s-kustm/Subodh/blob/master/Plone%205.2.4%20Vulnerable%20to%20bilend%20SSRF.pdf","tags":["x_transferred","Exploit","Third Party Advisory","evidence","web"]},{"url":"https://plone.org/security/hotfix/20210518/blind-ssrf-via-feedparser-accessing-an-internal-url","tags":["x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33926","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2023-289.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-47p5-p3jw-w78w"},{"url":"https://github.com/plone/Plone","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-33926","description":"An issue in Plone CMS v. 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.1rc2, 5.1rc1, 5.1b4, 5.1b3, 5.1b2, 5.1a2, 5.1a1, 5.1.7, 5.1.6, 5.1.5, 5.1.4, 5.1.2, 5.1.1 5.1, 5.0rc3, 5.0rc2, 5.0rc1, 5.0.9, 5.0.8, 5.0.7, 5.0.6, 5.0.5, 5.0.4, 5.0.3, 5.0.2, 5.0.10, 5.0.1, 5.0, 4.3.9, 4.3.8, 4.3.7, 4.3.6, 4.3.5, 4.3.4, 4.3.3, 4.3.20, 4 allows attacker to access sensitive information via the RSS feed protlet.","status":"published","published":"2023-02-17T00:00:00Z","modified":"2025-03-19T14:13:01.636Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:33:10.204494Z"}],"euvd":[{"id":"EUVD-2023-0204","description":"An issue in Plone CMS v. 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.1rc2, 5.1rc1, 5.1b4, 5.1b3, 5.1b2, 5.1a2, 5.1a1, 5.1.7, 5.1.6, 5.1.5, 5.1.4, 5.1.2, 5.1.1 5.1, 5.0rc3, 5.0rc2, 5.0rc1, 5.0.9, 5.0.8, 5.0.7, 5.0.6, 5.0.5, 5.0.4, 5.0.3, 5.0.2, 5.0.10, 5.0.1, 5.0, 4.3.9, 4.3.8, 4.3.7, 4.3.6, 4.3.5, 4.3.4, 4.3.3, 4.3.20, 4 allows attacker to access sensitive information via the RSS feed protlet.","status":"published","published":"2023-02-17T00:00:00Z","modified":"2025-03-19T14:13:01Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:59.10334Z"}],"ghsa":[{"id":"GHSA-47p5-p3jw-w78w","title":"Server-Side Request Forgery in Plone CMS","description":"An issue in Plone CMS allows attacker to access sensitive information via the RSS feed protlet.","status":"published","published":"2023-02-17T18:30:23Z","modified":"2024-11-26T18:49:14Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:38:23.575854Z"}],"nvd":[{"id":"CVE-2021-33926","description":"An issue in Plone CMS v. 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.1rc2, 5.1rc1, 5.1b4, 5.1b3, 5.1b2, 5.1a2, 5.1a1, 5.1.7, 5.1.6, 5.1.5, 5.1.4, 5.1.2, 5.1.1 5.1, 5.0rc3, 5.0rc2, 5.0rc1, 5.0.9, 5.0.8, 5.0.7, 5.0.6, 5.0.5, 5.0.4, 5.0.3, 5.0.2, 5.0.10, 5.0.1, 5.0, 4.3.9, 4.3.8, 4.3.7, 4.3.6, 4.3.5, 4.3.4, 4.3.3, 4.3.20, 4 allows attacker to access sensitive information via the RSS feed protlet.","status":"published","published":"2023-02-17T18:15:11.237Z","modified":"2026-06-17T03:55:22.793Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:07:07.323379Z"}],"osv":[{"id":"CVE-2021-33926","description":"An issue in Plone CMS v. 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.1rc2, 5.1rc1, 5.1b4, 5.1b3, 5.1b2, 5.1a2, 5.1a1, 5.1.7, 5.1.6, 5.1.5, 5.1.4, 5.1.2, 5.1.1 5.1, 5.0rc3, 5.0rc2, 5.0rc1, 5.0.9, 5.0.8, 5.0.7, 5.0.6, 5.0.5, 5.0.4, 5.0.3, 5.0.2, 5.0.10, 5.0.1, 5.0, 4.3.9, 4.3.8, 4.3.7, 4.3.6, 4.3.5, 4.3.4, 4.3.3, 4.3.20, 4 allows attacker to access sensitive information via the RSS feed protlet.","status":"published","published":"2023-02-17T18:15:11.237Z","modified":"2026-10-24T10:30:54.620434098Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:20.13324Z"},{"id":"GHSA-47p5-p3jw-w78w","title":"Server-Side Request Forgery in Plone CMS","description":"An issue in Plone CMS allows attacker to access sensitive information via the RSS feed protlet.","status":"published","published":"2023-02-17T18:30:23Z","modified":"2025-03-19T15:58:36.839514Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:46:36.782754Z"},{"id":"PYSEC-2023-289","description":"An issue in Plone CMS v. 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.1rc2, 5.1rc1, 5.1b4, 5.1b3, 5.1b2, 5.1a2, 5.1a1, 5.1.7, 5.1.6, 5.1.5, 5.1.4, 5.1.2, 5.1.1 5.1, 5.0rc3, 5.0rc2, 5.0rc1, 5.0.9, 5.0.8, 5.0.7, 5.0.6, 5.0.5, 5.0.4, 5.0.3, 5.0.2, 5.0.10, 5.0.1, 5.0, 4.3.9, 4.3.8, 4.3.7, 4.3.6, 4.3.5, 4.3.4, 4.3.3, 4.3.20, 4 allows attacker to access sensitive information via the RSS feed protlet.","status":"published","published":"2023-02-17T18:15:00Z","modified":"2024-11-25T22:42:24.918778Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:53.837392Z"}]}}