[NEW] [medium] MailPit: Vulnerability enables disclosure of information
A remote, anonymous attacker can exploit a vulnerability in MailPit to disclose information.
CSIRTS triage
- What
- A vulnerability in MailPit allows remote unauthenticated attackers to disclose information.
- Who is affected
- Publicly accessible MailPit instances without authentication are vulnerable.
- Urgency
- Medium severity; unauthenticated information disclosure is readily exploitable and should be patched promptly.
- Action
- Apply MailPit security patches and update to the latest version.
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-2026-3138
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-846970.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-84697 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
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
- 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
- medium[NEW] [medium] MailPit: Multiple vulnerabilities allow Denial of Servicecert-bund · 2026-08-21
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