What’s Vulnerable › Vulnerabilities

CVE-2021-24841: Helpful < 4.4.59 - Admin+ Stored Cross-Site Scripting

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-11-17 · updated 2026-06-17
• Weakness: CWE-79

Description

The Helpful WordPress plugin before 4.4.59 does not sanitise and escape some of its settings, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

Affected products

• Helpful: before 4.4.59 — fixed in 4.4.59

How to fix

Upgrade to a fixed version: Helpful 4.4.59. Check the vendor advisory for mitigations.

References

• https://mikadmin.fr/tech/XSS-Stored-Helpful-5b10bc7f40ab319f9797eb4abad4f420660.pdf
• https://wpscan.com/vulnerability/55d11acf-8c47-40da-be47-24f74fd7566e
• https://mikadmin.fr/tech/XSS-Stored-Helpful-5b10bc7f40ab319f9797eb4abad4f420660.pdf
• https://wpscan.com/vulnerability/55d11acf-8c47-40da-be47-24f74fd7566e

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