Vulnerability · Published Apr 2, 2026 · Assigned by GitHub_M
CVE-2026-34833Bulwark Webmail: Information Exposure: password returned in /api/auth/session
High 8.7
In plain English
A high-severity security flaw in webmail from bulwarkmail. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).
Severity (CVSS 4.0)8.7High
Exploit odds (30 days)0.2%top 93.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to version 1.4.10, the GET /api/auth/session endpoint previously included the user's plaintext password in the JSON response. This exposed credentials to browser logs, local caches, and network proxie. This issue has been patched in version 1.4.10.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| bulwarkmail | webmail | < 1.4.10 |
Weakness: CWE-312 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
References
- https://github.com/bulwarkmail/webmail/security/advisories/GHSA-47pm-883h-885r x_refsource_CONFIRM
- https://github.com/bulwarkmail/webmail/releases/tag/1.4.10 x_refsource_MISC