Summary An inverted-boolean bug in lettre's boring-tls integration silently disables TLS hostname verification for callers using the default (strict) configuration. An on-path attacker presenting any chain-valid certifi…
| CVE ID | CVE-2026-46428 |
| Vendor | Multiple Vendors |
| Affected Product | Multiple Products |
| Vulnerability Type | Security Vulnerability |
| CVSS Score | 9.5 (CRITICAL) |
| EPSS Score | 0.2% probability of exploitation in the next 30 days |
| Actively Exploited | ❌ No known exploitation |
| Patch Status | Pending Vendor Disclosure |
| Reported By | CYBERDUDEBIVASH SENTINEL APEX Intelligence (via sentinel_apex) |
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An inverted-boolean bug in lettre's boring-tls integration silently disables TLS hostname verification for callers using the default (strict) configuration. An on-path attacker presenting any chain-valid certificate for any domain can intercept SMTP submission, incl... [Full analysis available on Pro]
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