VULNERABILITY INTELLIGENCE

CVE-2026-35389

CVSS score7.5 HIGH
EPSS probability0.18%
CISA KEVNot currently listed
Published2026-04-06
Last modified2026-07-24
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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.

Weakness classification

  • security-advisories@github.com: CWE-295

Primary references