CVE-2026-56450: CWE-307 Improper Restriction of Excessive Authentication Attempts in ail project ail framework
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.
AI Analysis
Technical Summary
CVE-2026-56450 describes a vulnerability in the ail framework where repeated failed OTP verification attempts were not restricted. An attacker who successfully completed the password authentication stage could brute-force the OTP verification step without limitation. The patch for this issue introduces per-user tracking of failed OTP attempts, blocks verification after 30 failed attempts for one hour, resets the counter after successful OTP verification, and provides administrative recovery options to clear lockouts. The affected versions are all versions up to and including 6.8.0.
Potential Impact
An attacker who reaches the 2FA verification step can attempt unlimited OTP guesses, increasing the risk of bypassing the second factor and gaining unauthorized account access. This undermines the security provided by two-factor authentication, potentially leading to account compromise.
Mitigation Recommendations
A patch has been developed that enforces per-user failed OTP attempt tracking and blocks verification after 30 failed attempts for one hour. Administrators can recover locked accounts by purging affected lockouts. Users should upgrade to versions later than 6.8.0 where this fix is applied. Since no official remediation level or patch link is provided, verify the availability of the fix with the vendor or project advisory before applying.
CVE-2026-56450: CWE-307 Improper Restriction of Excessive Authentication Attempts in ail project ail framework
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.
CVSS v4.0
Score 5.1medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-56450 describes a vulnerability in the ail framework where repeated failed OTP verification attempts were not restricted. An attacker who successfully completed the password authentication stage could brute-force the OTP verification step without limitation. The patch for this issue introduces per-user tracking of failed OTP attempts, blocks verification after 30 failed attempts for one hour, resets the counter after successful OTP verification, and provides administrative recovery options to clear lockouts. The affected versions are all versions up to and including 6.8.0.
Potential Impact
An attacker who reaches the 2FA verification step can attempt unlimited OTP guesses, increasing the risk of bypassing the second factor and gaining unauthorized account access. This undermines the security provided by two-factor authentication, potentially leading to account compromise.
Mitigation Recommendations
A patch has been developed that enforces per-user failed OTP attempt tracking and blocks verification after 30 failed attempts for one hour. Administrators can recover locked accounts by purging affected lockouts. Users should upgrade to versions later than 6.8.0 where this fix is applied. Since no official remediation level or patch link is provided, verify the availability of the fix with the vendor or project advisory before applying.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CIRCL
- Date Reserved
- 2026-06-22T13:02:27.234Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a393e8aeed863c81ee5cd74
Added to database: 06/22/2026, 13:54:18 UTC
Last enriched: 06/22/2026, 14:10:21 UTC
Last updated: 06/22/2026, 18:59:34 UTC
Views: 5
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