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Servers and applications

CVE-2021-29047

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.

Severity
High 7.5
Published
16 May 2021
Last changed
9 Jul 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
Liferay Portal / DXPServers and applications · cpe:a:liferay:liferay_portal
  • Version 7.3.4
  • Version 7.3.5

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-29047
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-29047