CVE-2026-121452

MEDIUM 6.5

bbs-go through 4.4.6 Improper TLS Certificate Validation in SMTP Email Service

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

bbs-go through 4.4.6 contains an improper certificate validation vulnerability that allows network-positioned attackers to intercept SMTP traffic because sendEmail() sets InsecureSkipVerify to true. Attackers can present any certificate to capture SMTP PLAIN auth credentials and read or modify outgoing password-reset and verification emails.

CWE	CWE-295
Vendor	mlogclub
Product	bbs-go
Published	Nov 3, 2026

Stay Ahead of the Next One

Get instant alerts for mlogclub bbs-go

Be the first to know when new medium vulnerabilities affecting mlogclub bbs-go are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None

Affected Versions

mlogclub / bbs-go

0 ≤ 4.4.6

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/mlogclub/bbs-go/issues/310 github.com: https://github.com/mlogclub/bbs-go github.com: https://github.com/mlogclub/bbs-go/commit/1a06e35fa6314ee2d3ada70685a7afa740baf6f5 github.com: https://github.com/mlogclub/bbs-go/blob/v4.4.6/internal/services/email_service.go#L86-L113 vulncheck.com: https://www.vulncheck.com/advisories/bbs-go-through-4.4.6-improper-tls-certificate-validation-in-smtp-email-service

Credits

George Chen