CVE-2021-38189 describes a critical vulnerability in the Rust lettre crate prior to version 0.9.6, allowing attackers to inject arbitrary SMTP commands within an email message body. With a CVSS score of 9.8 (CRITICAL), this vulnerability presents a severe risk due to its network-based attack vector, low complexity, and potential for complete compromise of confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.9.6CPE matchmatch criteria | cpe:2.3:a:lettre:lettre:*:*:*:*:*:rust:*:* | ||
0.10.0CPE matchmatch criteria | cpe:2.3:a:lettre:lettre:0.10.0:alpha1:*:*:*:rust:*:* | ||
0.10.0CPE matchmatch criteria | cpe:2.3:a:lettre:lettre:0.10.0:alpha2:*:*:*:rust:*:* | ||
0.10.0CPE matchmatch criteria | cpe:2.3:a:lettre:lettre:0.10.0:alpha3:*:*:*:rust:*:* | ||
0.10.0CPE matchmatch criteria | cpe:2.3:a:lettre:lettre:0.10.0:alpha4:*:*:*:rust:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.