CVE-2026-35391

Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to 1.4.11, the getClientIP() function in lib/admin/session.ts trusted the first (leftmost) entry of the X-Forwarded-For header, which is fully controlled by the client. An attacker could forge their source IP address to bypass IP-based rate limiting (enabling brute-force attacks against the admin login) or forge audit log entries (making malicious activity appear to originate from arbitrary IP addresses). This vulnerability is fixed in 1.4.11.

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/security/advisories/GHSA-7pj2-232x-6698	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

09 Apr 2026, 20:59

Type	Values Removed	Values Added
First Time		Bulwarkmail webmail Bulwarkmail
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
CPE		cpe:2.3:a:bulwarkmail:webmail::::::::
References	~~() https://github.com/bulwarkmail/webmail/security/advisories/GHSA-7pj2-232x-6698 -~~	() https://github.com/bulwarkmail/webmail/security/advisories/GHSA-7pj2-232x-6698 - Vendor Advisory

06 Apr 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-06 21:16

Updated : 2026-04-09 20:59

NVD link : CVE-2026-35391

Mitre link : CVE-2026-35391

CVE.ORG link : CVE-2026-35391

JSON object : View

Products Affected

bulwarkmail

webmail

CWE

CWE-348

Use of Less Trusted Source

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