CVE-2021-31739

6.1 mediumEPSS 0.5%

Medium (6.1) in seppmail seppmail. EPSS 0.5% chance of exploitation in the next 30 days.

The SEPPmail solution is vulnerable to a Cross-Site Scripting vulnerability (XSS), because user input is not correctly encoded in HTML attributes when returned by the server.SEPPmail 11.1.10 allows XSS via a recipient address.

Severity

CVSS 3.1

6.1 medium

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2022-11-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

seppmail:seppmail

References

https://www.pentagrid.ch/en/blog/multiple-vulnerabilities-in-seppmail/
https://www.pentagrid.ch/en/blog/multiple-vulnerabilities-in-seppmail/

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