CVE-2021-24709: Weather Effect < 1.3.6 - Admin+ Stored Cross-Site Scripting

Severity: medium (CVSS 4.8 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: 2021-10-11 · updated 2026-06-17
Weakness: CWE-79

Description

The Weather Effect WordPress plugin before 1.3.6 does not properly validate and escape some of its settings (like *_size_leaf, *_flakes_leaf, *_speed) which could lead to Stored Cross-Site Scripting issues

Affected products

Weather Effect – Christmas Santa Snow Falling: before 1.3.6 — fixed in 1.3.6

How to fix

Upgrade to a fixed version: Weather Effect – Christmas Santa Snow Falling 1.3.6. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/df74ed76-af9e-47a8-9a4d-c5c57e9e0f91
https://wpscan.com/vulnerability/df74ed76-af9e-47a8-9a4d-c5c57e9e0f91

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