CVE-2021-29047

mediumpriority · track · 30EPSS 0.011 · 65 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.06% (65th) EPSS

CVSS 5 · medium

Is it mine?

7 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · OSV

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287USprimaryCWE-287US

affected products (7)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
liferay dxp< 7.3nvdUScpe:2.3:a:liferay:dxp:*:*:*:*:*:*:*:*
liferay dxp= 7.3nvdUScpe:2.3:a:liferay:dxp:*:*:*:*:*:*:*:*
liferay liferay portal= 7.3.4nvdUScpe:2.3:a:liferay:liferay_portal:*:*:*:*:*:*:*:*
liferay liferay portal= 7.3.5nvdUScpe:2.3:a:liferay:liferay_portal:*:*:*:*:*:*:*:*
Maven com.liferay.portal:release.dxp.bom< 7.3.10.fp1osvUSpkg:maven/com.liferay.portal/release.dxp.bom
Maven com.liferay.portal:release.portal.bom7.3.4 → 7.3.6osvUSpkg:maven/com.liferay.portal/release.portal.bom

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-9mxg-p873-6793Liferay Portal and Liferay DXP Fails to Invalidate CAPTCHA Answers After Use2022-05-24ghsa · osvUS
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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2021-05-16modified 2026-07-09

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+7711 more

references (6)

External citations — patches, advisories, analysis.

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