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CVE-2021-36827: WordPress Ninja Forms Contact Form plugin <= 3.6.9 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability

• Severity: medium (CVSS 4.8 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: none known
• Published: 2022-06-16 · updated 2026-06-17
• Weakness: CWE-79

Description

Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Saturday Drive's Ninja Forms Contact Form plugin <= 3.6.9 at WordPress via "label".

Affected products

• kstover Ninja Forms – The Contact Form Builder That Grows With You: through 3.6.9

References

• https://patchstack.com/database/vulnerability/ninja-forms/wordpress-ninja-forms-contact-form-plugin-3-6-9-authenticated-stored-cross-site-scripting-xss-vulnerability?_s_id=cve
• https://patchstack.com/database/vulnerability/ninja-forms/wordpress-ninja-forms-contact-form-plugin-3-6-9-authenticated-stored-cross-site-scripting-xss-vulnerability?_s_id=cve

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