LukasApps CAPTCHA tools for Contact Form 7 0.1.7 — 0.1.8 - Unauthenticated Arbitrary Shortcode Execution
CVE-2026-85117Published · Updated Action summary
Affected: 0.1.7 – 0.1.8Update to 0.1.9 or newer
All remediation steps- Severity
- Medium6.5
- CVSS
- 6.5CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
LukasApps CAPTCHA tools for Contact Form 7 contact-form-7-simple-recaptcha
- Affected0.1.7 – 0.1.8
- Patched in0.1.9
Update to 0.1.9 or newer.
You are affected if you run 0.1.7 – 0.1.8. Version 0.1.9 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under LukasApps CAPTCHA tools for Contact Form 7.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 0.1.9, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch LukasApps CAPTCHA tools for Contact Form 7 to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Jakub Herman.
The LukasApps CAPTCHA tools for Contact Form 7 plugin for WordPress is vulnerable to Remote Code Execution in versions 0.1.7 through 0.1.8. This is due to use of do_shortcode as a callback on the wpcf7_form_elements filter, which caused the WordPress shortcode parser to be run over the entire rendered form output including user-supplied field values. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes registered on the site by injecting shortcode syntax into Contact Form 7 field values that are then processed by the global WordPress shortcode parser.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in LukasApps CAPTCHA tools for Contact Form 7
All 3| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.1 | Reflected Cross-Site Scripting ≤0.1.1Update to 0.1.2 | CVE-2022-2187 | |
| High8.8 | Cross-Site Request Forgery to Stored Cross-Site Scripting <0.0.9Update to 0.0.9 | CVE-2021-24565 |
- Medium6.1Reflected Cross-Site Scripting
≤0.1.1Update to 0.1.2
- High8.8Cross-Site Request Forgery to Stored Cross-Site Scripting
<0.0.9Update to 0.0.9
Timeline
CVE published
Severity medium, CVSS 6.5
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.