Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

Advisory record · GHSA-qx5x-85p8-vg4j

Mailpit: Path traversal & arbitrary file write in mailpit dump --http via attacker-controlled message IDs

CVSS 5.9 MediumEPSS 0.0039 · 33rd percentile

Published by the GitHub Advisory Database at 19 May 2026, 15:53 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/axllent/mailpitGo<1.30.01.30.0
Identifiers
GHSA-qx5x-85p8-vg4j · CVE-2026-45711 · GO-2026-5599
Weakness (CWE)
CWE-22 · CWE-829
Tags
Published
19 May 2026
Updated
2 Sept 2026

Machine-written summary

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

Mailpit versions before 1.30.0 are vulnerable to path traversal in the mailpit dump --http sub-command. A malicious HTTP server posing as a Mailpit instance can supply message IDs containing ".." segments, causing the tool to write attacker-controlled content to arbitrary locations the running user can write to. An attacker needs the victim to run mailpit dump against the attacker's server, which could happen through a typosquatted or phishing-linked URL. Upgrade to Mailpit 1.30.0 or later. The source gives no workaround beyond upgrading.

Written 6 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

ScoreRatingCVSSVectorSource
5.9 Medium 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0039, the 33rd percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:46 UTC First seen by agentprime
  2. 31 Oct 2026, 14:46 UTC Confirmed by OSV

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.