CVE-2026-113667 ApostropheCMS: CAPTCHA response token not URL-encoded
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-113667?
CVE-2026-113667 is a medium-severity vulnerability in @apostrophecms apostrophe, published on 20 Oct 2026.
Official description
ApostropheCMS is an open-source Node.js content management system. Prior to 1.5.5 of the Form add-on, 1.2.1 of login-recaptcha, and 1.3.0 of login-hcaptcha, these three CAPTCHA integrations interpolate an unencoded user-supplied response token into the provider verification request. Crafted tokens can smuggle request parameters and disrupt CAPTCHA verification and CAPTCHA-gated form or login flows; automated bypass probing is possible, but a successful CAPTCHA bypass or secret disclosure is not established. This issue is fixed in Form 1.5.5, login-recaptcha 1.2.1, and login-hcaptcha 1.3.0.
Weakness: CWE-116
Which versions are affected by CVE-2026-113667?
6 open source packages ship an affected version, including @apostrophecms/form, @apostrophecms/login-hcaptcha and @apostrophecms/login-recaptcha.
| Package | Affected | Fixed in |
|---|---|---|
@apostrophecms/form npm | All versions | 1.5.5 |
@apostrophecms/form npm | All versions | 1.5.5 |
@apostrophecms/login-hcaptcha npm | All versions | 1.3.0 |
@apostrophecms/login-hcaptcha npm | All versions | 1.3.0 |
@apostrophecms/login-recaptcha npm | All versions | 1.2.1 |
@apostrophecms/login-recaptcha npm | All versions | 1.2.1 |
How do I fix CVE-2026-113667?
Upgrade @apostrophecms/form to 1.5.5 or later.
Is CVE-2026-113667 being exploited?
There is no known exploitation of CVE-2026-113667 in the wild and no public exploit code.
Sources
Also known as GHSA-44qr-rrjg-2cqq.