{"id":"CVE-2021-33038","aliases":["DEBIAN-CVE-2021-33038","DSA-4922-1","EUVD-2021-0099","GHSA-h39g-q63v-4h9p","PYSEC-2021-77","UBUNTU-CVE-2021-33038","openSUSE-SU-2021:0861-1","openSUSE-SU-2024:11207-1"],"status":"published","title":"Exposure of sensitive information to an unauthorized actor in HyperKitty","description":"An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01846,"percentile":0.79333,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-200","CWE-276"],"published":"2021-05-26T13:51:14Z","modified":"2026-10-23T18:03:15Z","fixes":[{"ecosystem":"PyPI","package":"hyperkitty","fixed_in":["1.3.5"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"hyperkitty","fixed_in":["1.3.4-4"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"hyperkitty","fixed_in":["1.3.4-4"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"hyperkitty","fixed_in":["1.3.4-4"],"sources":["osv"]},{"ecosystem":"Debian:10","package":"hyperkitty","fixed_in":["1.2.2-1+deb10u1"],"sources":["osv"]},{"ecosystem":"openSUSE:Leap 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15.2","package":"python-HyperKitty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2-lp152.2.3.1"}]}]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"hyperkitty_project","product":"hyperkitty"}],"references":[{"url":"https://gitlab.com/mailman/hyperkitty/-/issues/380","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix","web","report"]},{"url":"https://gitlab.com/mailman/hyperkitty/-/commit/9025324597d60b2dff740e49b70b15589d6804fa","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","fix","web","report"]},{"url":"https://www.debian.org/security/2021/dsa-4922","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://techblog.wikimedia.org/2021/06/11/discovering-and-fixing-cve-2021-33038-in-mailman3/","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33038","tags":["advisory"]},{"url":"https://gitlab.com/mailman/hyperkitty/-/blob/master/doc/news.rst#L83-L87","tags":["web"]},{"url":"https://github.com/advisories/GHSA-h39g-q63v-4h9p","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/hyperkitty/PYSEC-2021-77.yaml","tags":["web"]},{"url":"https://techblog.wikimedia.org/2021/06/11/discovering-and-fixing-cve-2021-33038-in-mailman3","tags":["web"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-33038","tags":["advisory"]},{"url":"https://gitlab.com/mailman/hyperkitty","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2021-33038","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-33038","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/B2AYEDFDYQWOWQ75OGHXNDIRLNRDNL5O/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1186575","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2021-33038","tags":["web"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2021-25322","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2021-33038","description":"An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.","status":"published","published":"2021-05-26T13:51:14Z","modified":"2024-08-03T23:42:19.473Z","updated_at":"2026-11-02T14:33:10.204494Z"}],"euvd":[{"id":"EUVD-2021-0099","description":"An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.","status":"published","published":"2021-05-26T13:51:14Z","modified":"2024-08-03T23:42:19Z","updated_at":"2026-11-03T03:24:35.30045Z"}],"ghsa":[{"id":"GHSA-h39g-q63v-4h9p","title":"Exposure of sensitive information to an unauthorized actor in HyperKitty","description":"An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty prior to 1.3.5. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.","status":"published","published":"2021-06-01T21:56:23Z","modified":"2024-09-23T16:25:28Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:38:05.526697Z"}],"nvd":[{"id":"CVE-2021-33038","description":"An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.","status":"published","published":"2021-05-26T14:15:08.913Z","modified":"2026-06-17T03:54:03.483Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T14:06:53.987491Z"}],"osv":[{"id":"CVE-2021-33038","description":"An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.","status":"published","published":"2021-05-26T14:15:08.913Z","modified":"2026-10-20T10:53:48.715255051Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:19.793849Z"},{"id":"DEBIAN-CVE-2021-33038","description":"An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.","status":"published","published":"2021-05-26T14:15:08.913Z","modified":"2026-10-23T18:03:15.012082463Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:35.233346Z"},{"id":"GHSA-h39g-q63v-4h9p","title":"Exposure of sensitive information to an unauthorized actor in HyperKitty","description":"An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty prior to 1.3.5. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.","status":"published","published":"2021-06-01T21:56:23Z","modified":"2024-09-23T16:51:18.510044Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:46:48.546324Z"},{"id":"UBUNTU-CVE-2021-33038","description":"An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.","status":"published","published":"2021-05-26T14:15:00Z","modified":"2026-10-17T12:55:47.117944706Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:54:27.332852Z"},{"id":"DSA-4922-1","title":"hyperkitty - security update","status":"published","published":"2021-05-29T00:00:00Z","modified":"2026-03-09T02:10:09.682641Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"openSUSE-SU-2021:0861-1","title":"Security update for python-HyperKitty","description":"This update for python-HyperKitty fixes the following issues:\n\n- CVE-2021-33038 [boo#1186575], information disclosure when importing a private mailing list\n","status":"published","published":"2021-06-09T16:06:45Z","modified":"2026-02-04T04:26:36.583851Z","updated_at":"2026-11-02T16:58:31.879684Z"},{"id":"openSUSE-SU-2024:11207-1","title":"HyperKitty-web-1.3.4-5.2 on GA media","description":"These are all security issues fixed in the HyperKitty-web-1.3.4-5.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:47:46.424582Z","updated_at":"2026-11-02T16:58:34.894275Z"},{"id":"PYSEC-2021-77","description":"An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.","status":"published","published":"2021-05-26T14:15:00Z","modified":"2023-11-08T04:06:03.148993Z","updated_at":"2026-11-02T15:52:53.119977Z"}]}}