CVE-2026-21859
Mailpit Proxy Endpoint has Server-Side Request Forgery (SSRF) vulnerability in github.com/axllent/mailpit
5.8
MEDIUM
CVSS 3.1
EPSS 0.53%
Description
Mailpit Proxy Endpoint has Server-Side Request Forgery (SSRF) vulnerability in github.com/axllent/mailpit
How to fix CVE-2026-21859
To remediate CVE-2026-21859, upgrade the affected package to a fixed version below.
- Go/github.com/axllent/mailpit—upgrade to 1.28.1 or later
- —upgrade to 1.28.1 or later
Is CVE-2026-21859 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.28.1
- from 0, < 1.28.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N |