What is CVE-2026-45713?

CVE-2026-45713 is a high-severity vulnerability in Axllent Mailpit, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-07-20.

How severe is CVE-2026-45713?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Axllent Mailpit

CVE-2026-45713

Mailpit is an email testing tool and API for developers. Prior to version 1.30.0, the Mailpit SMTP server has a Server.MaxSize int field that controls the maximum allowed DATA payload size, but the field is never assigned anywhere outside…

Vulnerability class: DoS (Denial of Service)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Axllent Mailpit — versions < 1.30.0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption
CWE-770 — Allocation of Resources Without Limits or Throttling

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-45713?: CVE-2026-45713 is a high-severity vulnerability in Axllent Mailpit, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-07-20.
How severe is CVE-2026-45713?: High severity. CVSS v3 base score is 7.5 out of 10.