CVE-2026-34833: CWE-312: Cleartext Storage of Sensitive Information in bulwarkmail webmail
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.
AI Analysis
Technical Summary
Bulwark Webmail, a self-hosted webmail client for Stalwart Mail Server, had a vulnerability (CWE-312) where the GET /api/auth/session endpoint returned the user's plaintext password in the JSON response prior to version 1.4.10. This exposure risked leaking credentials to browser logs, local caches, and network proxies. The vulnerability has a CVSS 4.0 base score of 8.7, indicating high severity. The issue was addressed and fixed in version 1.4.10.
Potential Impact
The vulnerability allows an attacker or any party with access to the affected API response to obtain users' plaintext passwords, potentially compromising user accounts. Exposure through browser logs, local caches, or network proxies increases the risk of credential theft. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade Bulwark Webmail to version 1.4.10 or later, where this vulnerability has been patched. No additional mitigation is required once the update is applied.
CVE-2026-34833: CWE-312: Cleartext Storage of Sensitive Information in bulwarkmail webmail
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Bulwark Webmail, a self-hosted webmail client for Stalwart Mail Server, had a vulnerability (CWE-312) where the GET /api/auth/session endpoint returned the user's plaintext password in the JSON response prior to version 1.4.10. This exposure risked leaking credentials to browser logs, local caches, and network proxies. The vulnerability has a CVSS 4.0 base score of 8.7, indicating high severity. The issue was addressed and fixed in version 1.4.10.
Potential Impact
The vulnerability allows an attacker or any party with access to the affected API response to obtain users' plaintext passwords, potentially compromising user accounts. Exposure through browser logs, local caches, or network proxies increases the risk of credential theft. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade Bulwark Webmail to version 1.4.10 or later, where this vulnerability has been patched. No additional mitigation is required once the update is applied.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-30T20:52:53.284Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 69cec5aae6bfc5ba1dfbd823
Added to database: 4/2/2026, 7:38:18 PM
Last enriched: 4/9/2026, 10:46:40 PM
Last updated: 5/20/2026, 8:52:37 PM
Views: 54
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