| Title | atjiu https://github.com/atjiu/pybbs <=6.0.0 CAPTCHA reuse Vulnerability |
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| Description | In the latest v6.0.0 version, the verification codes at the frontend login and registration functions do not automatically refresh, making them reusable. At the registration function, already registered usernames will display "Username already exists," which allows for username brute-forcing. After obtaining the username, one can proceed to the login function to continue brute-forcing the corresponding password. |
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| Source | ⚠️ https://github.com/atjiu/pybbs/issues/199 |
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| User | ZAST.AI (UID 87884) |
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| Submission | 07/25/2025 03:29 (1 Year ago) |
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| Moderation | 08/04/2025 15:05 (10 days later) |
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| Status | Accepted |
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| VulDB entry | 318675 [atjiu pybbs up to 6.0.0 Verification Code adminlogin/login Captcha] |
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| Points | 20 |
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