How severe is CVE-2023-3087?

High severity. CVSS v3 base score is 7.2 out of 10.

Is CVE-2023-3087 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Techjewel Fluentsmtp – Wp Smtp Plugin With Amazon Ses, Sendgrid, Mailgun, Postmark, Google And Any Provider

CVE-2023-3087

The FluentSMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via an email subject in versions up to, and including, 2.2.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (45.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

security@wordfence.com (Third Party Advisory)
security@wordfence.com (Patch)
security@wordfence.com (Patch)

Frequently asked questions

What is CVE-2023-3087?: CVE-2023-3087 is a high-severity vulnerability in Techjewel Fluentsmtp – Wp Smtp Plugin With Amazon Ses, Sendgrid, Mailgun, Postmark, Google And Any Provider, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2023-07-12.
How severe is CVE-2023-3087?: High severity. CVSS v3 base score is 7.2 out of 10.
Is CVE-2023-3087 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.