Is github.com/axllent/mailpit affected by CVE-2026-21859?

Go github.com/axllent/mailpit is affected in <1.28.1.

Is CVE-2026-21859 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.8%.

medium

CVE-2026-21859

Q: Is CVE-2026-21859 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.8%.

Go · github.com/axllent/mailpit

Summary

Mailpit Proxy Endpoint has Server-Side Request Forgery (SSRF) vulnerability in github.com/axllent/mailpit

Severity: medium
EPSS: 0.8% (p50)
Also known as: GHSA-8v65-47jx-7mfr, GO-2026-4284
Published: 2026-01-12

References

Related advisories

CVE-2026-45713 — high · Go/github.com/axllent/mailpit
CVE-2026-45712 — medium · Go/github.com/axllent/mailpit
CVE-2026-45711 — medium · Go/github.com/axllent/mailpit
CVE-2026-45709 — medium · Go/github.com/axllent/mailpit
CVE-2026-27808 — medium · Go/github.com/axllent/mailpit
CVE-2026-23829 — medium · Go/github.com/axllent/mailpit
CVE-2026-23845 — medium · Go/github.com/axllent/mailpit
CVE-2026-22689 — medium · Go/github.com/axllent/mailpit

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.