CVE-2026-46428

lettre is a a mailer library for Rust. Starting in version 0.10.1 and prior to version 0.11.22, 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...

CVE-2026-46428

CVE-2026-46428 affects the Rust mailer library lettre. Versions 0.10.1 through before 0.11.22 using the boring-tls backend have an inverted-boolean bug that silently disables TLS hostname verification under the default strict configuration. An on-path attacker presenting any chain-valid certifica...

CVE-2026-46428 lettre has TLS hostname verification disabled when using Boring TLS backend

lettre is a a mailer library for Rust. Starting in version 0.10.1 and prior to version 0.11.22, 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...

CVE-2026-46428 lettre has TLS hostname verification disabled when using Boring TLS backend

lettre is a a mailer library for Rust. Starting in version 0.10.1 and prior to version 0.11.22, 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...

RUSTSEC-2026-0141 TLS hostname verification disabled when using Boring TLS backend

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, including PLAIN/LOGIN credentials and...

TLS hostname verification disabled when using Boring TLS backend

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, including PLAIN/LOGIN credentials and...

EUVD-2021-1485

Malware in sbrugna...

EUVD-2021-1888

Malware in sbrugna...

CVE-2021-38189

An issue was discovered in the lettre crate before 0.9.6 for Rust. In an e-mail message body, an attacker can place a . character after two sequences and then inject arbitrary SMTP commands...

CVE-2020-28247

The lettre library through 0.10.0-alpha for Rust allows arbitrary sendmail option injection via transport/sendmail/mod.rs...

lettre-age.be Cross Site Scripting vulnerability OBB-3238082

Following the coordinated and responsible vulnerability disclosure guidelines of the ISO 29147 standard, Open Bug Bounty has: a. verified the vulnerability and confirmed its existence; b. notified the website operator about its existence. Technical details of the vulnerability are currently hidde...

GHSA-VC2P-R46X-M3VX Argument injection in lettre

Impact Affected versions of lettre allowed argument injection to the sendmail command. It was possible, using forged to addresses, to pass arbitrary arguments to the sendmail executable. Depending on the implementation original sendmail, postfix, exim, etc. it could be possible in some cases to...

Argument injection in lettre

Impact Affected versions of lettre allowed argument injection to the sendmail command. It was possible, using forged to addresses, to pass arbitrary arguments to the sendmail executable. Depending on the implementation original sendmail, postfix, exim, etc. it could be possible in some cases to...

CVE-2021-38189

An issue was discovered in the lettre crate before 0.9.6 for Rust. In an e-mail message body, an attacker can place a . character after two sequences and then inject arbitrary SMTP commands...

CVE-2021-38189

An issue was discovered in the lettre crate before 0.9.6 for Rust. In an e-mail message body, an attacker can place a . character after two sequences and then inject arbitrary SMTP commands...

CVE-2021-38189

An issue was discovered in the lettre crate before 0.9.6 for Rust. In an e-mail message body, an attacker can place a . character after two sequences and then inject arbitrary SMTP commands...

CVE-2021-38189

The CVE-2021-38189 issue affects the lettre crate (Rust) prior to 0.9.6. In the body of an email, an attacker can place a dot after two consecutive CRLF sequences, enabling arbitrary SMTP command injection after the message ends. This represents a control-flow vulnerability in SMTP handling rathe...

GHSA-QC36-Q22Q-CJW3 SMTP command injection in lettre

Impact Affected versions of lettre allowed SMTP command injection through an attacker's controlled message body. The module for escaping lines starting with a period wouldn't catch a period that was placed after a double CRLF sequence, allowing the attacker to end the current message and write...

SMTP command injection in lettre

Impact Affected versions of lettre allowed SMTP command injection through an attacker's controlled message body. The module for escaping lines starting with a period wouldn't catch a period that was placed after a double CRLF sequence, allowing the attacker to end the current message and write...

RUSTSEC-2021-0069 SMTP command injection in body

Affected versions of lettre allowed SMTP command injection through an attacker's controlled message body. The module for escaping lines starting with a period wouldn't catch a period that was placed after a double CRLF sequence, allowing the attacker to end the current message and write arbitrary...