CVE-2026-49870
Snipe-IT's TOTP is Brute-Forceable Due to Missing Rate Limiting on `POST /two-factor`
描述
### Impact `POST /two-factor` had no rate limiting, lockout, or attempt counter. An attacker with valid credentials can submit unlimited TOTP guesses. The TOTP implementation accepts the current code plus one step on either side (`config/google2fa.php window=1`), so at any instant 3 of 1,000,000 codes are accepted. After a correct guess the attacker holds a fully authenticated session. If the instance is configured with 2FA in optional mode (`two_factor_enabled='1'`), the attacker can additionally disable 2FA via `POST /account/profile` with `two_factor_optin=0`. No OTP re-verification is required. The account is then accessible with the password alone on future logins. If 2FA is in required-for-all mode (`='2'`), the per-user opt-out path is closed and the impact stops at session-level account takeover. For an admin target, `POST /api/v1/users/two_factor_reset` additionally clears another user's 2FA secret. ### Patches Patched in v8.6.0
如何修補 CVE-2026-49870
要修補 CVE-2026-49870,請將受影響套件升級到下列已修補版本。
- —升級至 8.6.0 或更新版本
CVE-2026-49870 正在被利用嗎?
目前沒有被利用訊號。CVE-2026-49870 既不在 CISA KEV 也沒有最新的 EPSS 分數。
受影響套件(1)
- from 0, < 8.6.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N |