CVE-2022-4477: Smash Balloon Social Post Feed < 4.1.6 - Contributor+ Stored XSS

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-01-16 · updated 2026-06-17

Description

The Smash Balloon Social Post Feed WordPress plugin before 4.1.6 does not validate and escapes some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as a contributor to perform Stored Cross-Site Scripting attacks against logged-in admins.

Affected products

Smash Balloon Social Post Feed: before 4.1.6 — fixed in 4.1.6

How to fix

Upgrade to a fixed version: Smash Balloon Social Post Feed 4.1.6. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/c32a4c58-9f2b-4afa-9a21-4b4a5c4c4c41
https://wpscan.com/vulnerability/c32a4c58-9f2b-4afa-9a21-4b4a5c4c4c41

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