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.
Metrics
Affected Vendors & Products
Advisories
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Fixes
Solution
No solution given by the vendor.
Workaround
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References
History
Tue, 10 Nov 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | mailcow: dockerized before 2026-11 Template Injection RCE via Domain-Wide Footer | |
| First Time appeared |
Mailcow
Mailcow mailcow\ |
|
| Weaknesses | CWE-1336 | |
| CPEs | cpe:2.3:a:mailcow:mailcow\:_dockerized:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Mailcow
Mailcow mailcow\ |
|
| References |
|
|
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-11-10T16:39:42.814Z
Reserved: 2026-11-10T12:36:09.843Z
Link: CVE-2026-125757
No data.
Status : Received
Published: 2026-11-10T16:17:23.107
Modified: 2026-11-10T16:17:23.107
Link: CVE-2026-125757
No data.
OpenCVE Enrichment
No data.
Weaknesses