What is CVE-2021-29045?

CVE-2021-29045 is a medium-severity vulnerability in Liferay Dxp, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-05-17.

How severe is CVE-2021-29045?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Liferay Dxp

CVE-2021-29045

Cross-site scripting (XSS) vulnerability in the Redirect module's redirection administration page in Liferay Portal 7.3.2 through 7.3.5, and Liferay DXP 7.3 before fix pack 1 allows remote attackers to inject arbitrary web script or HTML via the _com_liferay_redirect_web_internal_portlet_RedirectPortlet_destinationURL parameter.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-05-17 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (54.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Liferay Dxp — versions 7.3
Liferay Portal

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

af854a3a-2127-422b-91ae-364da2661108 (Vendor Advisory)
portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5m… (Vendor Advisory)

Frequently asked questions

What is CVE-2021-29045?: CVE-2021-29045 is a medium-severity vulnerability in Liferay Dxp, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-05-17.
How severe is CVE-2021-29045?: Medium severity. CVSS v3 base score is 6.1 out of 10.