CVE-2026-34834

UNKNOWN 0.0

Bulwark Webmail: Authentication Bypass in verifyIdentity() due to missing cookie validation

CVSS Score

0.0

EPSS Score

0.1%

EPSS Percentile

22th

Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to version 1.4.10, the verifyIdentity() function contained logic that returned true if no session cookies were present. This allowed unauthenticated attackers to bypass security checks and access/modify user settings via the /api/settings endpoint by providing arbitrary headers. This issue has been patched in version 1.4.10.

CWE	CWE-287
Vendor	bulwarkmail
Product	webmail
Published	Apr 2, 2026
Last Updated	Apr 3, 2026

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Affected Versions

bulwarkmail / webmail

< 1.4.10

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/bulwarkmail/webmail/security/advisories/GHSA-4356-876g-rfmh github.com: https://github.com/bulwarkmail/webmail/releases/tag/1.4.10