CVE-2026-34834

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/bulwarkmail/webmail/releases/tag/1.4.10	Product
https://github.com/bulwarkmail/webmail/security/advisories/GHSA-4356-876g-rfmh	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:bulwarkmail:webmail:*:*:*:*:*:*:*:*

History

09 Apr 2026, 21:14

Type	Values Removed	Values Added
First Time		Bulwarkmail webmail Bulwarkmail
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
References	~~() https://github.com/bulwarkmail/webmail/releases/tag/1.4.10 -~~	() https://github.com/bulwarkmail/webmail/releases/tag/1.4.10 - Product
References	~~() https://github.com/bulwarkmail/webmail/security/advisories/GHSA-4356-876g-rfmh -~~	() https://github.com/bulwarkmail/webmail/security/advisories/GHSA-4356-876g-rfmh - Vendor Advisory
CPE		cpe:2.3:a:bulwarkmail:webmail::::::::

02 Apr 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-02 20:16

Updated : 2026-04-09 21:14

NVD link : CVE-2026-34834

Mitre link : CVE-2026-34834

CVE.ORG link : CVE-2026-34834

JSON object : View

Products Affected

bulwarkmail

webmail

CWE

CWE-287

Improper Authentication

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