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Vulnerability record · CVE-2021-24276 · published 5 May 2021

CVE-2021-24276: Supsystic contact form cross-site scripting vulnerability

Supsystic · Contact Form

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

6.1 CVSS 3.1 Medium EPSS 16% · top 3.2% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 4 tagged exploit
17 Jun 2026Last modified by NVD

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-24276), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.