TI-2023-02893 Aliases CVE-2023-3087 GHSA-vp8h-vvmf-j596

FluentSMTP <= 2.2.4 - Unauthenticated Stored Cross-Site Scripting via Email Subject

LOW 39CWE-79Published 2023-07-12 · Updated 2026-04-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00605 49th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
techjewel	FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider	up to 2.2.4	—	No fix listed	CNA

FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider Vendortechjewel Affected up to 2.2.4 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:wpmanageninja:fluentsmtp::::::wordpress::*	before 2.2.5	Vulnerable	WP ManageNinja LLC

cpe:2.3:a:wpmanageninja:fluentsmtp:*:*:*:*:*:wordpress:*:* Versions before 2.2.5 Vulnerable ·WP ManageNinja LLC

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-3087
2026-10-03 Alias added: GHSA-vp8h-vvmf-j596

References

Patch 2

Advisory 1

https://www.wordfence.com/threat-intel/vulnerabilities/id/fa47a794-e5ce-491d-a10b-c7c5718aa853?source=cve

TI-2024-08826 Deserialization of untrusted data in techjewel FluentSMTP – WP SMTP Plugin with Amazon… CVSS 3.1CRITICAL 9.8
TI-2026-13364 Deserialization of untrusted data in techjewel Fluent Forms Pro Add On Pack CVSS 3.1HIGH 8.8
TI-2026-04723 Fluent Forms <= 6.1.21 - Authenticated (Subscriber+) Authorization Bypass via 'form_id' Parameter CVSS 3.1HIGH 8.2
TI-2026-04722 Fluent Forms <= 6.2.0 - Authenticated (Subscriber+) Authorization Bypass via 'table' Parameter CVSS 3.1HIGH 8.2
TI-2026-02060 Fluent Forms Pro Add On Pack <= 6.1.17 - Missing Authorization to Unauthenticated Payment Status modification CVSS 3.1HIGH 7.5
TI-2026-02001 Fluent Forms Pro <= 6.1.17 - Unauthenticated Stored Cross-Site Scripting via Draft Form Submission CVSS 3.1HIGH 7.2

See all 23 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences