GHSA-6jxm-fv7w-rw5j: github.com/axllent/mailpit (CVE-2026-23845)

Mailpit has a Server-Side Request Forgery (SSRF) via HTML Check API in github.com/axllent/mailpit

CVSS 5.8 MediumEPSS 0.0043 · 37th percentile

Published by the GitHub Advisory Database at 3 Feb 2026, 20:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
github.com/axllent/mailpit	Go	<1.28.3	1.28.3

Identifiers

GHSA-6jxm-fv7w-rw5j · CVE-2026-23845 · GO-2026-4345

Weakness (CWE)

CWE-918

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Mailpit versions before 1.28.3 are vulnerable to Server-Side Request Forgery through the HTML Check API. The source gives few details on the attack conditions or what an attacker could reach. Upgrade to Mailpit 1.28.3 or later.

Written 10 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.8	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0043, the 37th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the GitHub Advisory Database, published 3 Feb 2026. New records show when each source confirmed them.

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.