TI-2023-02899 Aliases CVE-2023-3093 GHSA-4vh8-mwxv-vg98

YaySMTP <= 2.4.5 - Unauthenticated Stored Cross-Site Scripting via Email

LOW 38CWE-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 YaySMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via email contents in versions up to, and including, 2.4.5 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 0.00462 40th 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
YayCommerce	YaySMTP and Email Logs: Amazon SES, SendGrid, Outlook, Mailgun, Brevo, Google and Any SMTP Service	up to 2.4.5	—	No fix listed	CNA

YaySMTP and Email Logs: Amazon SES, SendGrid, Outlook, Mailgun, Brevo, Google and Any SMTP Service VendorYayCommerce Affected up to 2.4.5 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:yaycommerce:yaysmtp::::::wordpress::*	before 2.4.6	Vulnerable	YayCommerce

cpe:2.3:a:yaycommerce:yaysmtp:*:*:*:*:*:wordpress:*:* Versions before 2.4.6 Vulnerable ·YayCommerce

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-3093
2026-10-03 Alias added: GHSA-4vh8-mwxv-vg98

References

Patch 1

https://plugins.trac.wordpress.org/changeset/2922163/

Advisory 1

https://www.wordfence.com/threat-intel/vulnerabilities/id/68e6ec3a-c5fd-4f63-a9a0-2c9ddfb96e2e?source=cve

TI-2025-00808 SMTP for Sendinblue – YaySMTP <= 1.2 - Unauthenticated Stored Cross-Site Scripting via Email Logs CVSS 3.1HIGH 7.2
TI-2025-00781 SMTP for SendGrid – YaySMTP <= 1.4 - Unauthenticated Stored Cross-Site Scripting via Email Logs CVSS 3.1HIGH 7.2
TI-2025-00779 YaySMTP 2.4.9 - 2.6.2 - Unauthenticated Stored Cross-Site Scripting CVSS 3.1HIGH 7.2
TI-2022-02186 YaySMTP < 2.2.1 - Subscriber+ SMTP Credentials Leak CVSS 3.1MEDIUM 6.5
TI-2022-02187 YaySMTP < 2.2.1 - Subscriber+ Stored Cross-Site Scripting CVSS 3.1MEDIUM 5.4
TI-2022-02188 YaySMTP < 2.2.2 - Admin+ Stored Cross-Site Scripting CVSS 3.1MEDIUM 4.8

See all 7 →

Sources

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