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.
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-33038
- https://gitlab.com/mailman/hyperkitty/-/commit/9025324597d60b2dff740e49b70b15589d6804fa
- https://gitlab.com/mailman/hyperkitty/-/issues/380
- https://www.debian.org/security/2021/dsa-4922
- https://techblog.wikimedia.org/2021/06/11/discovering-and-fixing-cve-2021-33038-in-mailman3/
- https://gitlab.com/mailman/hyperkitty/-/blob/master/doc/news.rst#L83-L87
- https://github.com/advisories/GHSA-h39g-q63v-4h9p