Is CVE-2021-24918 actively exploited?

Yes. CVE-2021-24918 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2021-24918 be exploited remotely?

The attack vector of CVE-2021-24918 has not been classified yet.

What is the CVSS score of CVE-2021-24918?

CVE-2021-24918 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2021-24918

UNKNOWNCISA KEVIN THE WILD

CVE-2021-24918

Published: April 11, 2026

EPSS:0.18%probability of exploitation in 30 daysPercentile:39.7th

Official Description

The Smash Balloon Social Post Feed WordPress plugin before 4.0.1 did not have any privilege or nonce validation before saving the plugin's setting. As a result, any logged-in user on a vulnerable site could update the settings and store rogue JavaScript on each of its posts and pages.

NVD Source

Technical Analysis

CVE-2021-24918 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2021-24918 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.