bulwarkmail webmail up to 1.4.9 /api/auth/session cleartext storage

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.12

Summaryinfo

A vulnerability was found in bulwarkmail webmail up to 1.4.9. It has been declared as problematic. The impacted element is an unknown function of the file /api/auth/session. The manipulation results in cleartext storage. This vulnerability is reported as CVE-2026-34833. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in bulwarkmail webmail up to 1.4.9. Affected is some unknown processing of the file /api/auth/session. The manipulation with an unknown input leads to a cleartext storage vulnerability. CWE is classifying the issue as CWE-312. The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere. This is going to have an impact on confidentiality. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-34833 since 03/30/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1555.

Upgrading to version 1.4.10 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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Productinfo

Type

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cleartext storage
CWE: CWE-312 / CWE-310
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: webmail 1.4.10

Timelineinfo

03/30/2026 CVE reserved
04/02/2026 +3 days VulDB entry created
04/03/2026 +0 days Advisory disclosed
04/03/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-47pm-883h-885r
Status: Confirmed

CVE: CVE-2026-34833 (🔒)
GCVE (CVE): GCVE-0-2026-34833
GCVE (VulDB): GCVE-100-355032

Entryinfo

Created: 04/03/2026 00:06
Changes: 04/03/2026 00:06 (70)
Complete: 🔍
Cache ID: 216:8A9:103

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