CVE-2021-29047 json
Liferay Portal and Liferay DXP Fails to Invalidate CAPTCHA Answers After Use
published 2021-05-16 5 y ago modified 2026-07-09 4 mo ago also GHSA-9mxg-p873-6793 , EUVD-2021-15693
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- maven com.liferay.portal:release.portal.bom 7.3.6
- maven com.liferay.portal:release.dxp.bom 7.3.10.fp1
- liferay dxp 7.3
Exploit prediction
1.06% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | com.liferay.portal:release.portal.bom | >=7.3.4, <7.3.6 |
7.3.6 |
| maven | com.liferay.portal:release.dxp.bom | <7.3.10.fp1 |
7.3.10.fp1 |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
portal.liferay.dev
/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/120743467
vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-29047
advisory
-
github.com
/liferay/liferay-portal
package
-
web.archive.org
/web/20210524180455/https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmV
web
-
liferay.com
web
Sources
- CVE List CVE-2021-29047
- GitHub Advisory GHSA-9mxg-p873-6793
- NVD CVE-2021-29047
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.