{"id":"CVE-2026-113667","title":"ApostropheCMS: CAPTCHA response token not URL-encoded","summary":"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…","severity":"medium","cvss":5.3,"cvssVector":"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","cvssSource":"cna","cwe":["CWE-116"],"vendor":"apostrophecms","product":"apostrophe","affected":["apostrophe < 4.33.0","form < 1.5.5","login-hcaptcha < 1.3.0","login-recaptcha < 1.2.1"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-21T14:24:40.257511Z"},"published":"2026-10-20","updated":"2026-10-21","sourceUpdated":"2026-10-21T15:53:18.916Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-113667","references":[{"url":"https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-44qr-rrjg-2cqq","label":"https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-44qr-rrjg-2cqq"},{"url":"https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce","label":"https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce"},{"url":"https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350","label":"https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350"},{"url":"https://github.com/apostrophecms/apostrophe/releases/tag/@apostrophecms/form@1.5.5","label":"https://github.com/apostrophecms/apostrophe/releases/tag/@apostrophecms/form@1.5.5"},{"url":"https://github.com/advisories/GHSA-44qr-rrjg-2cqq"}],"tags":["cve.org","ghsa","npm"],"epss":0.00366,"epssPercentile":0.3024,"aliases":["GHSA-44qr-rrjg-2cqq"],"ecosystem":"npm","patched":["@apostrophecms/form 1.5.5","@apostrophecms/login-recaptcha 1.2.1","@apostrophecms/login-hcaptcha 1.3.0"],"ingestedAt":"2026-10-20T18:14:37.212Z","slug":"CVE-2026-113667","body":"## Overview\n\nApostropheCMS 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.\n\n## Affected\n\n- `apostrophe < 4.33.0`\n- `form < 1.5.5`\n- `login-hcaptcha < 1.3.0`\n- `login-recaptcha < 1.2.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-113667)\n\nAffected packages:\n\n- `@apostrophecms/form < 1.5.5`\n- `@apostrophecms/login-recaptcha < 1.2.1`\n- `@apostrophecms/login-hcaptcha < 1.3.0`\n\nPatched in:\n\n- `@apostrophecms/form 1.5.5`\n- `@apostrophecms/login-recaptcha 1.2.1`\n- `@apostrophecms/login-hcaptcha 1.3.0`\n\nSource: https://github.com/advisories/GHSA-44qr-rrjg-2cqq","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}