The SimpleCaptcha implementation in Liferay Portal 7.3.4, 7.3.5 and Liferay DXP 7.3 before fix pack 1 does not invalidate CAPTCHA answers after it is used, which allows remote attackers to repeatedly perform actions protected by a CAPTCHA challenge by reusing the same CAPTCHA answer.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| com.liferay.portal:release.portal.bom(Maven) | 7.3.4 | 7.3.6 | N/A |
| com.liferay.portal:release.dxp.bom(Maven) | 0 | 7.3.10.fp1 | N/A |
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