by Kastro
Paper/Archive/CVE-2026-111675

CVE-2026-111675

xiaochong0302 course-tencent-cloud — Course-tencent-cloud through 2.0.1 Verification Code Brute Force Account Takeover

EPSS 0.5%public exploitCVSS 9.1
critical.is priorityof 100
46
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 45.0.450 × 209.0Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
course-tencent-cloud≤ 2.0.1–CNA

Scores by source

VulnCheck (CNA)9.1CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
VulnCheck (CNA)7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploithackmd.io/@hieuPenguinnn/ctc-verify-code-brute-force-account-takeoverwriteupgithub.com/xiaochong0302/course-tencent-cloud/blob/v2.0.1/app/Services/Verify.php#L27-L73writeupgithub.com/xiaochong0302/course-tencent-cloud/blob/v2.0.1/app/Services/Logic/Account/PasswordReset.phpwriteupvulncheck.com/advisories/course-tencent-cloud-through-2.0.1-verification-code-brute-force-account-takeover