WordPress Plugin Vulnerabilities

Contact Form 7 Captcha 0.1.7 - 0.1.8 - Unauthenticated Arbitrary Shortcode Execution via Form Field Repopulation

Description

The plugin runs the shortcode parser over the whole rendered Contact Form 7 form, including the values a visitor submitted, allowing unauthenticated users to execute arbitrary shortcodes registered on the site.

Proof of Concept

Affects Plugins

References

Classification

Type
INJECTION
OWASP top 10

Miscellaneous

Original Researcher
Jakub Herman
Submitter
Jakub Herman
Submitter website
Verified
Yes

Timeline

Publicly Published
2026-09-07 (about 2 days ago)
Added
2026-09-07 (about 1 day ago)
Last Updated
2026-09-07 (about 1 day ago)

Other