In Knowage through 6.1.1, the sign up page does not invalidate a valid CAPTCHA token. This allows for CAPTCHA bypass in the signup page.
https://blog.contentsecurity.com.au/knowage-captcha-bypass
Source: Mitre, NVD
Published: 2019-09-05
Updated: 2026-06-17
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Severity: Medium
Base Score: 5.3
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS: 0.0027