High severity7.4NVD Advisory· Published Oct 16, 2026· Updated Oct 16, 2026
CVE-2026-111675
CVE-2026-111675
Description
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.
Affected products
1- Range: <=2.0.1
Patches
Vulnerability mechanics
References
4- github.com/xiaochong0302/course-tencent-cloud/blob/v2.0.1/app/Services/Logic/Account/PasswordReset.phpnvd
- github.com/xiaochong0302/course-tencent-cloud/blob/v2.0.1/app/Services/Verify.phpnvd
- hackmd.io/@hieuPenguinnn/ctc-verify-code-brute-force-account-takeovernvd
- www.vulncheck.com/advisories/course-tencent-cloud-through-2.0.1-verification-code-brute-force-account-takeovernvd
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