Vulnerability · Published Jan 3, 2024 · Assigned by WPScan

CVE-2023-6621Post SMTP < 2.8.7 - Reflected Cross-Site Scripting

Medium 6.1

In plain English

A medium-severity cross-site scripting in POST SMTP from Unknown. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).

Severity (CVSS 3.1)6.1Medium

Exploit odds (30 days)0.4%top 65.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Unknown	POST SMTP	0 – before 2.8.7

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

https://wpscan.com/vulnerability/b49ca336-5bc2-4d72-a9a5-b8c020057928 exploit, vdb-entry, technical-description