Medium 5.3Published Oct 20, 2026

CVE-2026-113667ApostropheCMS: CAPTCHA response token not URL-encoded

Updated under an hour ago (Oct 28, 2026, 6:23 AM ET)

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It affects apostrophecms apostrophe and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for apostrophecms apostrophe

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Weakness (CWE): CWE-116
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 20, 2026

Affected products

Affected products

apostrophecms apostrophe apostrophecms:apostrophe (from the name)	before 4.33.0	CNA record
@apostrophecms form apostrophecms:form (from the name)	before 1.5.5	CNA record
@apostrophecms login-hcaptcha apostrophecms:login_hcaptcha (from the name)	before 1.3.0	CNA record
@apostrophecms login-recaptcha apostrophecms:login_recaptcha (from the name)	before 1.2.1	CNA record

References

References

https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-44qr-rrjg-2cqq	x-refsource-confirm
https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce	x-refsource-misc
https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350	x-refsource-misc
https://github.com/apostrophecms/apostrophe/releases/tag/@apostrophecms/form@1.5.5	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.