CVE-2026-22689
Mailpit is vulnerable to Cross-Site WebSocket Hijacking (CSWSH) allowing unauthenticated access to emails in github.com/axllent/mailpit
Description
Mailpit is vulnerable to Cross-Site WebSocket Hijacking (CSWSH) allowing unauthenticated access to emails in github.com/axllent/mailpit. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/axllent/mailpit before v0.0.0-20260110031614.
How to fix CVE-2026-22689
To remediate CVE-2026-22689, upgrade the affected package to a fixed version below.
- —upgrade to 1.28.2 or later
- —upgrade to 1.28.2 or later
Is CVE-2026-22689 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 1.2.6, < 1.28.2
- >= 1.2.6, < 1.28.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |