CVE-2026-86009
- Source
- https://cve.org/CVERecord?id=CVE-2026-86009
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86009.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-86009
- Aliases
-
- GHSA-crww-m82r-2wfm
- Published
- 2026-10-16T16:19:06Z
- Modified
- 2026-10-17T02:48:33Z
- Severity
-
- 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N CVSS Calculator
- Summary
- Mailu: Domain managers can allow themselves to spoof on other hosted domains they should not control
- Details
-
Mailu is a mail server distributed as a set of Docker images. Prior to f05aeb8322e2f61096af6b089d61ba6f40587d96, domain managers can enable spoofing for hosted domains they do not control. A potentially malicious domain administrator enables spoofing for another hosted domain and can send emails that are authenticated with DKIM/SPF for domains they should not be able to. This vulnerability is addressed by f05aeb8322e2f61096af6b089d61ba6f40587d96.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-285", "CWE-863" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86009.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86009.json
- https://github.com/Mailu/Mailu/commit/f05aeb8322e2f61096af6b089d61ba6f40587d96
- https://github.com/Mailu/Mailu/issues/2686
- https://github.com/Mailu/Mailu/pull/4072
- https://github.com/Mailu/Mailu/security/advisories/GHSA-crww-m82r-2wfm
- https://nvd.nist.gov/vuln/detail/CVE-2026-86009