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.

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
mlogclub bbs-go unaffected
Version Status Constraints
0 affected ≤ 4.4.6

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Bbs-go Project Subscribe
Bbs-go Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Tue, 03 Nov 2026 15:30:00 +0000

Type Values Removed Values Added
Description 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.
Title bbs-go through 4.4.6 Improper TLS Certificate Validation in SMTP Email Service
First Time appeared Bbs-go Project
Bbs-go Project bbs-go
Weaknesses CWE-295
CPEs cpe:2.3:a:bbs-go_project:bbs-go:*:*:*:*:*:*:*:*
Vendors & Products Bbs-go Project
Bbs-go Project bbs-go
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N'}

cvssV4_0

{'score': 8.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-03T15:17:01.813Z

Reserved: 2026-11-03T12:33:53.717Z

Link: CVE-2026-121452

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-03T16:17:24.120

Modified: 2026-11-03T16:17:24.253

Link: CVE-2026-121452

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses