CVE-2026-111675
Course-tencent-cloud through 2.0.1 Verification Code Brute Force Account Takeover
CVSS Score
7.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-307 |
| Vendor | xiaochong0302 |
| Product | course-tencent-cloud |
| Published | Oct 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
xiaochong0302 / course-tencent-cloud
0 ≤ 2.0.1
References
hackmd.io: https://hackmd.io/@hieuPenguinnn/ctc-verify-code-brute-force-account-takeover github.com: https://github.com/xiaochong0302/course-tencent-cloud/blob/v2.0.1/app/Services/Verify.php#L27-L73 github.com: https://github.com/xiaochong0302/course-tencent-cloud/blob/v2.0.1/app/Services/Logic/Account/PasswordReset.php vulncheck.com: https://www.vulncheck.com/advisories/course-tencent-cloud-through-2.0.1-verification-code-brute-force-account-takeover
Credits
hieuPenguinnn