CVE-2023-6621: The POST SMTP WordPress plugin before 2.8.7 does not sanitise and escape the msg parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used agains

medium Affects post-smtp (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published 2024-01-03; advisory modified 2026-06-17.

The POST SMTP WordPress plugin before 2.8.7 does not sanitise and escape the msg parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used agains

Package: post-smtp (WordPress plugin) WordPress
Affected versions: <2.8.7
Fixed in: 2.8.7
Severity: medium CVSS 6.1
Exploitation: not on CISA KEV · EPSS 0% (34.2th percentile)
Published: 2024-01-03
Source: nvd

References

CWE-79

NVD record post-smtp (WordPress plugin) advisories

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