CVEvulnerability

CVE-2026-22689

6.5 MEDIUM Published 2026-01-10 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-01-10
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weaknesses
CWE-1385

Description

Mailpit is an email testing tool and API for developers. Prior to version 1.28.2, the Mailpit WebSocket server is configured to accept connections from any origin. This lack of Origin header validation introduces a Cross-Site WebSocket Hijacking (CSWSH) vulnerability. An attacker can host a malicious website that, when visited by a developer running Mailpit locally, establishes a WebSocket connection to the victim's Mailpit instance (default ws://localhost:8025). This allows the attacker to intercept sensitive data such as email contents, headers, and server statistics in real-time. This issue has been patched in version 1.28.2.

Affected configurations

• axllent mailpit (< 1.28.2)

Related

Weakness · CWE (1)

  • CWE-1385 Missing Origin Validation in WebSockets weakness

References