CVE-2026-35389

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.

PUBLISHED Reserved 2026-04-02 | Published 2026-04-06 | Updated 2026-04-07 | Assigner GitHub_M

Problem types

CWE-295: Improper Certificate Validation

Product status

References

github.com/...ebmail/security/advisories/GHSA-v6w6-338p-p256

cve.org (CVE-2026-35389)

nvd.nist.gov (CVE-2026-35389)

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