What’s Vulnerable › Vulnerabilities

CVE-2021-24276: Contact Form by Supsystic < 1.7.15 - Reflected Cross-Site scripting (XSS)

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 16.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-05-05 · updated 2026-06-17
• Weakness: CWE-79

Description

The Contact Form by Supsystic WordPress plugin before 1.7.15 did not sanitise the tab parameter of its options page before outputting it in an attribute, leading to a reflected Cross-Site Scripting issue

Affected products

• supsystic Contact Form by Supsystic: before 1.7.15 — fixed in 1.7.15

How to fix

Upgrade to a fixed version: supsystic Contact Form by Supsystic 1.7.15. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/164308/WordPress-Contact-Form-1.7.14-Cross-Site-Scripting.html
• https://wpscan.com/vulnerability/1301123c-5e63-432a-ab90-3221ca532d9c
• http://packetstormsecurity.com/files/164308/WordPress-Contact-Form-1.7.14-Cross-Site-Scripting.html
• https://wpscan.com/vulnerability/1301123c-5e63-432a-ab90-3221ca532d9c

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