{"id":"CVE-2026-85586","title":"phpMyFAQ versions before 4.1.8 fail to validate CAPTCHA when the store parameter is set to 'now' in question submission requests","summary":"phpMyFAQ versions before 4.1.8 fail to validate CAPTCHA when the store parameter is set to 'now' in question submission requests. Unauthenticated attackers can bypass CAPTCHA protection and submit unlimited questions directly, causing da…","severity":"medium","cvss":6.9,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","cwe":["CWE-799"],"vendor":"thorsten","product":"phpMyFAQ","affected":["phpMyFAQ < 4.1.8"],"published":"2026-09-04","updated":"2026-09-10","sourceUpdated":"2026-09-10T16:17:59.233","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-85586","references":[{"url":"https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-72vj-pvm4-mm7x","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.8-captcha-bypass-via-store-parameter","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-10T14:28:22.626469Z"},"cvssSource":"cna","epss":0.00359,"epssPercentile":0.2961,"ingestedAt":"2026-09-08T20:10:03.164Z","slug":"CVE-2026-85586","body":"## Overview\n\nphpMyFAQ versions before 4.1.8 fail to validate CAPTCHA when the store parameter is set to 'now' in question submission requests. Unauthenticated attackers can bypass CAPTCHA protection and submit unlimited questions directly, causing database pollution and triggering outgoing mail notifications.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":38,"depthScoreParts":{"impact":38,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":202039,"id":"CVE-2026-85586","ts":1789400046676,"field":"cvss","old":null,"new":"6.9"},{"seq":202038,"id":"CVE-2026-85586","ts":1789400046676,"field":"severity","old":"none","new":"medium"},{"seq":200766,"id":"CVE-2026-85586","ts":1789397615234,"field":"cvss","old":"6.9","new":null},{"seq":200765,"id":"CVE-2026-85586","ts":1789397615234,"field":"severity","old":"medium","new":"none"},{"seq":199461,"id":"CVE-2026-85586","ts":1789395514319,"field":"cvss","old":null,"new":"6.9"},{"seq":199460,"id":"CVE-2026-85586","ts":1789395514319,"field":"severity","old":"none","new":"medium"},{"seq":198706,"id":"CVE-2026-85586","ts":1789392242780,"field":"cvss","old":"6.9","new":null},{"seq":198705,"id":"CVE-2026-85586","ts":1789392242780,"field":"severity","old":"medium","new":"none"},{"seq":197039,"id":"CVE-2026-85586","ts":1789384291155,"field":"cvss","old":null,"new":"6.9"},{"seq":197038,"id":"CVE-2026-85586","ts":1789384291155,"field":"severity","old":"none","new":"medium"},{"seq":194168,"id":"CVE-2026-85586","ts":1789378781925,"field":"cvss","old":"6.9","new":null},{"seq":194167,"id":"CVE-2026-85586","ts":1789378781925,"field":"severity","old":"medium","new":"none"},{"seq":192955,"id":"CVE-2026-85586","ts":1789376513718,"field":"cvss","old":null,"new":"6.9"},{"seq":192954,"id":"CVE-2026-85586","ts":1789376513718,"field":"severity","old":"none","new":"medium"},{"seq":191742,"id":"CVE-2026-85586","ts":1789373629946,"field":"cvss","old":"6.9","new":null},{"seq":191741,"id":"CVE-2026-85586","ts":1789373629946,"field":"severity","old":"medium","new":"none"},{"seq":190527,"id":"CVE-2026-85586","ts":1789369472654,"field":"cvss","old":null,"new":"6.9"},{"seq":190526,"id":"CVE-2026-85586","ts":1789369472654,"field":"severity","old":"none","new":"medium"},{"seq":189314,"id":"CVE-2026-85586","ts":1789368407821,"field":"cvss","old":"6.9","new":null},{"seq":189313,"id":"CVE-2026-85586","ts":1789368407821,"field":"severity","old":"medium","new":"none"},{"seq":188097,"id":"CVE-2026-85586","ts":1789365229365,"field":"cvss","old":null,"new":"6.9"},{"seq":188096,"id":"CVE-2026-85586","ts":1789365229365,"field":"severity","old":"none","new":"medium"},{"seq":186884,"id":"CVE-2026-85586","ts":1789363470146,"field":"cvss","old":"6.9","new":null},{"seq":186883,"id":"CVE-2026-85586","ts":1789363470146,"field":"severity","old":"medium","new":"none"},{"seq":185670,"id":"CVE-2026-85586","ts":1789361227631,"field":"cvss","old":null,"new":"6.9"},{"seq":185669,"id":"CVE-2026-85586","ts":1789361227631,"field":"severity","old":"none","new":"medium"},{"seq":184457,"id":"CVE-2026-85586","ts":1789358362453,"field":"cvss","old":"6.9","new":null},{"seq":184456,"id":"CVE-2026-85586","ts":1789358362453,"field":"severity","old":"medium","new":"none"},{"seq":182708,"id":"CVE-2026-85586","ts":1789354315777,"field":"cvss","old":null,"new":"6.9"},{"seq":182707,"id":"CVE-2026-85586","ts":1789354315777,"field":"severity","old":"none","new":"medium"},{"seq":181501,"id":"CVE-2026-85586","ts":1789353316510,"field":"cvss","old":"6.9","new":null},{"seq":181500,"id":"CVE-2026-85586","ts":1789353316510,"field":"severity","old":"medium","new":"none"},{"seq":180294,"id":"CVE-2026-85586","ts":1789350283423,"field":"cvss","old":null,"new":"6.9"},{"seq":180293,"id":"CVE-2026-85586","ts":1789350283423,"field":"severity","old":"none","new":"medium"},{"seq":179087,"id":"CVE-2026-85586","ts":1789348291725,"field":"cvss","old":"6.9","new":null},{"seq":179086,"id":"CVE-2026-85586","ts":1789348291725,"field":"severity","old":"medium","new":"none"},{"seq":177880,"id":"CVE-2026-85586","ts":1789346368705,"field":"cvss","old":null,"new":"6.9"},{"seq":177879,"id":"CVE-2026-85586","ts":1789346368705,"field":"severity","old":"none","new":"medium"},{"seq":176673,"id":"CVE-2026-85586","ts":1789343183361,"field":"cvss","old":"6.9","new":null},{"seq":176672,"id":"CVE-2026-85586","ts":1789343183361,"field":"severity","old":"medium","new":"none"},{"seq":174790,"id":"CVE-2026-85586","ts":1789334874350,"field":"cvss","old":null,"new":"6.9"},{"seq":174789,"id":"CVE-2026-85586","ts":1789334874350,"field":"severity","old":"none","new":"medium"},{"seq":173585,"id":"CVE-2026-85586","ts":1789333685593,"field":"cvss","old":"6.9","new":null},{"seq":173584,"id":"CVE-2026-85586","ts":1789333685593,"field":"severity","old":"medium","new":"none"},{"seq":172399,"id":"CVE-2026-85586","ts":1789331091701,"field":"cvss","old":null,"new":"6.9"},{"seq":172398,"id":"CVE-2026-85586","ts":1789331091701,"field":"severity","old":"none","new":"medium"},{"seq":171213,"id":"CVE-2026-85586","ts":1789328779723,"field":"cvss","old":"6.9","new":null},{"seq":171212,"id":"CVE-2026-85586","ts":1789328779723,"field":"severity","old":"medium","new":"none"},{"seq":170008,"id":"CVE-2026-85586","ts":1789327195846,"field":"cvss","old":null,"new":"6.9"},{"seq":170007,"id":"CVE-2026-85586","ts":178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