CVE-2026-111675CWE-307

CVE-2026-111675

High · published October 16, 2026

CVSS v3.1
7.4
EPSS
0%
Percentile
34.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
9.1 · CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00410 · 34.1th percentile
Weakness
CWE-307 · Improper Restriction of Excessive Authentication Attempts
Published
2026-10-16T22:17Z
References (5)
https://github.com/xiaochong0302/course-tencent-cloud/blob/v2.0.1/app/Services/Logic/Account/PasswordReset.php · [email protected]https://github.com/xiaochong0302/course-tencent-cloud/blob/v2.0.1/app/Services/Verify.php#L27-L73 · [email protected]https://hackmd.io/@hieuPenguinnn/ctc-verify-code-brute-force-account-takeover · [email protected]https://www.vulncheck.com/advisories/course-tencent-cloud-through-2.0.1-verification-code-brute-force-account-takeover · [email protected]https://hackmd.io/@hieuPenguinnn/ctc-verify-code-brute-force-account-takeover · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 18 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 16 OCT 17:39Z
    Course-tencent-cloud through 2.0.1 Verification Code Brute Force Account Takeover
    cvelistv5
  • 16 OCT 17:39Z
    Course-tencent-cloud through 2.0.1 Verification Code Brute Force Account Takeover
    cvelistv5