CVE-2026-67447
A remote, anonymous attacker can exploit a vulnerability in MailPit to perform a Denial of Service attack.
CSIRTS triage
- What
- A remote, anonymous attacker can trigger a Denial of Service attack against MailPit.
- Who is affected
- Any internet-accessible MailPit instance without authentication requirements.
- Urgency
- Medium severity; denial of service is disruptive but does not expose data or grant code execution.
- Action
- Apply the security patch for CVE-2026-67447 or restrict network access to MailPit.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.37% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all EPSS-scored CVEs.
Advisory coverage (3)
- medium[NEW] [medium] MailPit: Vulnerability enables Denial of Servicecert-bund · 2026-08-21
- mediumCVE-2026-67447: Mailpit is an email testing tool and API for developers. From 1.30.0 until 1.30.5, Mailpit's i…nvd · 2026-08-20
- mediumGHSA-r553-m4fv-5v97: Mailpit: SMTP DATA line reader buffers over-limit input before size enforcementghsa · 2026-08-20
External references
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[](https://www.csirts.com/cve/CVE-2026-67447)