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CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-35389

Bulwark Webmail S/MIME signature verification accepted self-signed certificates

Description

Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to 1.4.11, S/MIME signature verification did not validate the certificate trust chain (checkChain: false). Any email signed with a self-signed or untrusted certificate was displayed as having a valid signature. This vulnerability is fixed in 1.4.11.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

bulwarkmail webmail

  • < 1.4.11affected

References