CVE-2023-6621

MEDIUM 6.1EPSS 0.4%

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 against high privilege users such as admin.

CVSS v3.1: 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v3.1: 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.40% chance of exploitation in the next 30 days, 33th percentile
Published: 2024-01-03
Updated: 2025-06-18

Proof-of-concept exploits (1)

https://wpscan.com/vulnerability/b49ca336-5bc2-4d72-a9a5-b8c020057928

References

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