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CVE-2026-56450— AIL Framework - Missing Rate Limiting Enables Brute-Force Attacks Against Two-Factor Authentication Codes

Quick assessment

Affected
ail project ail framework
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ail project AIL Framework是ail project组织开源的一款服务器中间件软件。 ail project AIL Framework 0版本至6.8.0版本存在授权问题漏洞，该漏洞源于未限制双重身份验证（OTP）代码的失败尝试次数。攻击者完成密码验证阶段后，可无限次提交OTP猜测，通过暴力破解绕过第二重身份验证，导致未经授权的账户访问。以下版本受到影响：0版本至6.8.0版本。

AI Predicted 7.4 Difficulty: Easy EPSS 0.58% · P46

Possible ATT&CK Techniques 1 AI

T1110.001 · Password Guessing

Affected Version Matrix 1

VendorProduct Version RangeStatus
ail project ail framework ≤ 6.8.0 affected
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I. Basic Information for CVE-2026-56450

Vulnerability Information
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Vulnerability Title
AIL Framework - Missing Rate Limiting Enables Brute-Force Attacks Against Two-Factor Authentication Codes
Source: CVE Program / CVE List V5
Vulnerability Description
AIL did not restrict repeated failed attempts to verify a two-factor authentication (OTP) code. An attacker who had reached the 2FA verification step, such as after successfully completing the password-authentication stage, could submit an unlimited number of OTP guesses. This could enable brute-force guessing of a valid code and bypass the intended second authentication factor, resulting in unauthorized account access. The patch introduces per-user failed-OTP tracking, blocks verification after 30 failed attempts for one hour, clears the counter after a successful OTP verification, and provides administrator recovery actions to purge affected lockouts.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
ail project AIL Framework 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ail project AIL Framework是ail project组织开源的一款服务器中间件软件。 ail project AIL Framework 0版本至6.8.0版本存在授权问题漏洞，该漏洞源于未限制双重身份验证（OTP）代码的失败尝试次数。攻击者完成密码验证阶段后，可无限次提交OTP猜测，通过暴力破解绕过第二重身份验证，导致未经授权的账户访问。以下版本受到影响：0版本至6.8.0版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ail project ail framework 0 ~ 6.8.0 -

II. Public POCs for CVE-2026-56450

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III. Intelligence Information for CVE-2026-56450

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Patches & Fixes for CVE-2026-56450 (1)

IV. Related Vulnerabilities

Same product: ail framework
Same vendor: ail project
Same weakness: CWE-307

V. Comments for CVE-2026-56450

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