{"id":"CVE-2026-125757","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-125757","summary":"mailcow: dockerized before 2026-11 contains a server-side template injection vulnerability that allows domain administrators to execute commands in the shared rspamd container by storing…","details":"mailcow: dockerized before 2026-11 contains a server-side template injection vulnerability that allows domain administrators to execute commands in the shared rspamd container by storing a malicious domain-wide footer. Attackers can embed a Jinja macro with an os.execute default value, rendered by the rspamd MOO_FOOTER prefilter, to read or inject mail for every tenant and disable filtering.","published":"2026-11-10T16:17:23.107","modified":"2026-11-10T16:17:23.107","cvss":{"score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/mailcow/mailcow-dockerized/commit/e986803980db8b29435a2ddba5d9760737a818e3","label":"mailcow/mailcow-dockerized@e986803"},"references":[{"type":"WEB","url":"https://github.com/mailcow/mailcow-dockerized/blob/55982ac74bfd35581cc44b122ab5fc659e3ae90a/data/conf/rspamd/lua/rspamd.local.lua#L847-L850"},{"type":"WEB","url":"https://github.com/mailcow/mailcow-dockerized/commit/e986803980db8b29435a2ddba5d9760737a818e3"},{"type":"WEB","url":"https://github.com/mailcow/mailcow-dockerized/releases/tag/2026-11"},{"type":"WEB","url":"https://github.com/mailcow/mailcow-dockerized/security/advisories/GHSA-jgr3-fv33-x43c"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/mailcow-dockerized-before-2026-11-template-injection-rce-via-domain-wide-footer"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-11-10T16:17:23.107"}}