CVE-2026-111675
CVE-2026-111675 · Course-tencent-cloud through 2.0.1 Verification Code Brute Force Account Takeover
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 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.
CVSS 9.1 · Critical · EPSS 0.5%
- Published
- Updated
Affected products and versions
course-tencent-cloud
- Versions
- ≥ 0, ≤ 2.0.1: Affected (custom)
No fix published
Original sources
- https://hackmd.io/@hieuPenguinnn/ctc-verify-code-brute-force-account-takeover
- https://github.com/xiaochong0302/course-tencent-cloud/blob/v2.0.1/app/Services/Verify.php#L27-L73
- https://github.com/xiaochong0302/course-tencent-cloud/blob/v2.0.1/app/Services/Logic/Account/PasswordReset.php
- https://www.vulncheck.com/advisories/course-tencent-cloud-through-2.0.1-verification-code-brute-force-account-takeover
- https://nvd.nist.gov/vuln/detail/CVE-2026-111675