{"id":"CVE-2026-111675","title":"Course-tencent-cloud through 2.0.1 Verification Code Brute Force Account Takeover","summary":"Course-tencent-cloud through 2.0.1 contains an improper restriction of authentication attempts vulnerability that allows unauthenticated attackers to brute force 6-digit SMS/email verification codes, which are never invalidated or attemp…","severity":"high","cvss":7.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-307"],"vendor":"xiaochong0302","product":"course-tencent-cloud","affected":["course-tencent-cloud <= 2.0.1"],"published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T17:39:35.253Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111675","references":[{"url":"https://hackmd.io/@hieuPenguinnn/ctc-verify-code-brute-force-account-takeover"},{"url":"https://github.com/xiaochong0302/course-tencent-cloud/blob/v2.0.1/app/Services/Verify.php#L27-L73"},{"url":"https://github.com/xiaochong0302/course-tencent-cloud/blob/v2.0.1/app/Services/Logic/Account/PasswordReset.php"},{"url":"https://www.vulncheck.com/advisories/course-tencent-cloud-through-2.0.1-verification-code-brute-force-account-takeover","label":"VulnCheck Advisory: Course-tencent-cloud through 2.0.1 Verification Code Brute Force Account Takeover"}],"tags":["cve.org"],"ingestedAt":"2026-10-16T18:43:08.666Z","slug":"CVE-2026-111675","body":"## Overview\n\nCourse-tencent-cloud through 2.0.1 contains an improper restriction of authentication attempts vulnerability that allows unauthenticated attackers to brute force 6-digit SMS/email verification codes, which are never invalidated or attempt-limited. Attackers who know a victim's phone or email can trigger a code and rotate source IPs against the password reset and verify login endpoints to take over accounts.\n\n## Affected\n\n- `course-tencent-cloud <= 2.0.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":40.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}