[NEW] [medium] MailPit: Multiple vulnerabilities allow Denial of Service
An attacker can exploit multiple vulnerabilities in MailPit to perform a Denial of Service attack.
CSIRTS triage
- What
- Multiple vulnerabilities allow an attacker to perform a Denial of Service attack.
- Who is affected
- Users of MailPit are affected.
- Urgency
- Remediation is medium due to the potential for exploitation, but not currently known to be actively exploited.
- Action
- Update to the latest version of MailPit.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2256
Recent advisories for MailPit
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- highGHSA-w878-pj84-3j5v: Mailpit: SMTP command parser buffers unbounded command lines before syntax rejectionghsa · 2026-09-02
- highGHSA-75mr-qw9x-3r39: Mailpit: Thumbnail generation decodes unbounded image dimensions before scalingghsa · 2026-09-02
- medium[NEW] [medium] MailPit: Vulnerability enables disclosure of informationcert-bund · 2026-09-02
- mediumCVE-2026-84697: Mailpit's IsInternalIP deny list function fails to block the Azure WireServer address 168.63.1…nvd · 2026-09-02
- medium[NEW] [medium] MailPit: Vulnerability enables Denial of Servicecert-bund · 2026-08-21
- medium[NEW] [medium] MailPit: Vulnerability allows disclosure of informationcert-bund · 2026-08-21
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