CRITICALCVSS v3.1 9.1Vulnerability

CVE-2026-125757

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.

Properties

Severity
CRITICAL
Nvd fetched at
2026-11-10T23:33:48.924589+00:00
Cvss severity
CRITICAL
Cvss score
9.1
Retrieved at
2026-11-10T23:34:23+00:00
Score
9.1
Cvss version
3.1
Last source
NVD
Cve id
CVE-2026-125757
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
First seen by Signal
2026-11-10T19:28:55+00:00
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Published at
2026-11-10T16:17:23.107
Last modified
2026-11-10T17:17:31.177

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CVE-2026-125757 (CVSS v3.1 9.1) — Ninja Signal Threat Intelligence | Ninja Signal