CVE-2020-15840

mediumpriority · track · 21EPSS 0.012 · 68 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.22% (68th) EPSS

CVSS 5 · medium

Is it mine?

12 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

In Liferay Portal before 7.3.1, Liferay Portal 6.2 EE, and Liferay DXP 7.2, DXP 7.1 and DXP 7.0, the property 'portlet.resource.id.banned.paths.regexp' can be bypassed with doubled encoded URLs.

cvss

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

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

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

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 1.4

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · OSV

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284US

affected products (12)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
liferay digital experience platform= 7.0nvdUScpe:2.3:a:liferay:digital_experience_platform:*:*:*:*:*:*:*:*
liferay digital experience platform= 7.1nvdUScpe:2.3:a:liferay:digital_experience_platform:*:*:*:*:*:*:*:*
liferay digital experience platform= 7.2nvdUScpe:2.3:a:liferay:digital_experience_platform:*:*:*:*:*:*:*:*
liferay liferay portal< 7.3.1nvdUScpe:2.3:a:liferay:liferay_portal:*:*:*:*:*:*:*:*
liferay liferay portal= 6.2nvdUScpe:2.3:a:liferay:liferay_portal:*:*:*:*:*:*:*:*
Maven com.liferay.portal:com.liferay.portal.impl< 7.1.3osvUSpkg:maven/com.liferay.portal/com.liferay.portal.impl
Maven com.liferay.portal:com.liferay.portal.impl7.2.0 → 7.4.0osvUSpkg:maven/com.liferay.portal/com.liferay.portal.impl
Maven com.liferay.portal:release.dxp.bom< 7.0.10.fp93osvUSpkg:maven/com.liferay.portal/release.dxp.bom
Maven com.liferay.portal:release.dxp.bom7.1.0 → 7.1.10.fp19osvUSpkg:maven/com.liferay.portal/release.dxp.bom
Maven com.liferay.portal:release.dxp.bom7.2.0 → 7.2.10.fp7osvUSpkg:maven/com.liferay.portal/release.dxp.bom
Maven com.liferay.portal:release.portal.bom< 7.3.1osvUSpkg:maven/com.liferay.portal/release.portal.bom

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-vrwx-q9pj-x488Liferay Portal and Liferay DXP Bypass via Double Encoded URL2022-05-24ghsa · osvUS
In Liferay Portal before 7.3.1, com.liferay.portal:com.liferay.portal.impl before 7.1.3 and 7.4.0, Liferay Portal 6.2 EE, and Liferay DXP 7.2, DXP 7.1 and DXP 7.0, the property 'portlet.resource.id.banned.paths.regexp' can be bypassed with doubled encoded URLs.

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 2020-09-24modified 2026-06-17

references (10)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan