Medium, CVSS 5.3PyPIAmendedPublished
GNU Mailman Postorius Access Control Issues
CVE-2021-40347 · GHSA-v83x-78q3-gr2j
- Affected
- PyPI postorius < 1.3.5
- Fixed in
- 1.3.5· Vendor fix available
- Issue
- An issue was discovered in views/list.py in GNU Mailman Postorius before 1.3.5. An attacker (logged into any account) can send a crafted POST request to unsubscribe any user from a mailing list, also revealing whether that address was subscribed in the first place.
Recommended action: Upgrade to 1.3.5 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.