CVE-2022-2371: YaySMTP < 2.2.1 - Subscriber+ Stored Cross-Site Scripting

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-08-08 · updated 2026-06-17
Weakness: CWE-79

Description

The YaySMTP WordPress plugin before 2.2.1 does not have proper authorisation when saving its settings, allowing users with a role as low as subscriber to change them, and use that to conduct Stored Cross-Site Scripting attack due to the lack of escaping in them as well.

Affected products

YaySMTP – Simple WP SMTP Mail: before 2.2.1 — fixed in 2.2.1

How to fix

Upgrade to a fixed version: YaySMTP – Simple WP SMTP Mail 2.2.1. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/31405f1e-fc07-43f5-afc1-9cfbaf6911b7
https://wpscan.com/vulnerability/31405f1e-fc07-43f5-afc1-9cfbaf6911b7

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