CVE-2026-34834 Details
Description
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.
An authentication bypass vulnerability has been identified in Bulwark Webmail versions prior to 1.4.10. The issue arises in the verifyIdentity() function, which incorrectly returns true when no session cookies are present. This flaw allows unauthenticated attackers to bypass security checks and access or modify user settings through the /api/settings endpoint by sending arbitrary headers. The vulnerability has been patched in version 1.4.10, which removes the faulty logic and ensures that the function correctly returns false when no valid session is available.
Users are strongly advised to upgrade to Bulwark Webmail version 1.4.10. Instructions for downloading the latest version are available on the Bulwark Webmail GitHub Releases page.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 2, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| bulwarkmail webmail | < 1.4.10 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 9, 2026 | Initial Analysis | [email protected] |
| Apr 2, 2026 | New CVE Received | [email protected] |