{"cve":"CVE-2021-33038","nvd":{"published":"2021-05-26T14:15:08.913","modified":"2026-06-17T03:54:03.483","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-276"],"references":["https://gitlab.com/mailman/hyperkitty/-/commit/9025324597d60b2dff740e49b70b15589d6804fa","https://gitlab.com/mailman/hyperkitty/-/issues/380","https://techblog.wikimedia.org/2021/06/11/discovering-and-fixing-cve-2021-33038-in-mailman3/","https://www.debian.org/security/2021/dsa-4922","https://gitlab.com/mailman/hyperkitty/-/commit/9025324597d60b2dff740e49b70b15589d6804fa"],"products":["debian:debian_linux","hyperkitty_project:hyperkitty"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-33038","score":0.01846,"percentile":0.79055,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-h39g-q63v-4h9p","url":"https://osv.dev/vulnerability/GHSA-h39g-q63v-4h9p","summary":"Exposure of sensitive information to an unauthorized actor in HyperKitty","modified":"2024-09-23T16:51:18.510044Z","packages":[{"ecosystem":"PyPI","name":"hyperkitty","purl":"pkg:pypi/hyperkitty","ranges":["<1.3.5"],"fixed":["1.3.5"]}]},{"id":"PYSEC-2021-77","url":"https://osv.dev/vulnerability/PYSEC-2021-77","summary":"","modified":"2023-11-08T04:06:03.148993Z","packages":[{"ecosystem":"PyPI","name":"hyperkitty","purl":"pkg:pypi/hyperkitty","ranges":["<1.3.5"],"fixed":["1.3.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}