CVE-2021-43270

7.5 highEPSS 0.4%

High (7.5) in datalust seq.app.emailplus. EPSS 0.4% chance of exploitation in the next 30 days.

Datalust Seq.App.EmailPlus (aka seq-app-htmlemail) 3.1.0-dev-00148, 3.1.0-dev-00170, and 3.1.0-dev-00176 can use cleartext SMTP on port 25 in some cases where encryption on port 465 was intended.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 32% of CVEs (scores of 2026-10-31)
CWE: CWE-319
Published: 2021-11-02
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

datalust:seq.app.emailplus

References

https://github.com/datalust/seq-app-htmlemail/pull/93
https://github.com/datalust/seq-app-htmlemail/pull/93

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