CVE-2021-38189

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    CVE-2021-38189

    Published: 8 Aug 2021Last Modified: 7 Aug 2026

    Summary:

    Details: 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 <CR><LF> sequences and then inject arbitrary SMTP commands.

    References: https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/lettre/RUSTSEC-2021-0069.md, https://rustsec.org/advisories/RUSTSEC-2021-0069.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -5e474677f9b9a7c68066fc5c9f6b6ec36f52c391

    Affected versions

    v0.9.5
    v0.9.4
    v0.9.3
    v0.9.2
    v0.9.1
    v0.9.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-38189 | CVE-DB