CVE-2026-121452: bbs-go improper certificate validation in SMTP

CVE-2026-121452 · Severity: medium · CVSS 6.5 · Published 2026-11-03

bbs-go is a lightweight community and Q&A platform that sends administrative emails such as password resets and account verification. A vulnerability in the SMTP email functionality disables certificate validation, allowing attackers on the network to intercept email traffic and steal credentials or modify sensitive emails sent to users.

Technologies: Mlogclub Bbs-Go. Vendors: Mlogclub.

Quick answers

Is CVE-2026-121452 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-121452 being exploited in the wild.
How severe is CVE-2026-121452?
Medium severity, with a CVSS score of 6.5, published 3 November 2026.
Which products and versions are affected?
Mlogclub Bbs-Go through 4.4.6.
Is there a fix for CVE-2026-121452?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-121452 attacked?
It is attacked over the network.
Am I affected by CVE-2026-121452?
Check whether you run Mlogclub Bbs-Go at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The sendEmail() function in email_service.go sets InsecureSkipVerify to true in the TLS configuration, disabling certificate validation. An attacker with network access can perform a man-in-the-middle attack on SMTP connections to capture PLAIN authentication credentials and read or modify password-reset and verification emails.

Affected products

  • mlogclub bbs-go through 4.4.6

Timeline

  • 2026-11-03: disclosed

References

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