SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2020-28247

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

MEDIUM 5.3EPSS 1.52%

Does this matter?

Lower severity and a low EPSS score (1.52%). Track it; it rarely justifies an emergency change on its own.

Description

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

CVSS 3.1
5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS
1.52% probability · 74th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
lettre/lettre
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 1.52%26 October 202626 October 2026

EPSS 1.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.