What is CVE-2021-33338?

CVE-2021-33338 is a high-severity vulnerability in Liferay Digital Experience Platform, classified under Cross-Site Request Forgery (CSRF). CVSS score: 7.5/10. Published 2021-08-04.

How severe is CVE-2021-33338?

High severity. CVSS v3 base score is 7.5 out of 10.

CSRF in Liferay Digital Experience Platform

CVE-2021-33338

The Layout module in Liferay Portal 7.1.0 through 7.3.2, and Liferay DXP 7.1 before fix pack 19, and 7.2 before fix pack 6, exposes the CSRF token in URLs, which allows man-in-the-middle attackers to obtain the token and conduct Cross-Site Request Forgery (CSRF) attacks via the p_auth parameter.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2021-08-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (34.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Liferay Digital Experience Platform — versions 7.1, 7.2
Liferay Portal

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5m… (Vendor Advisory)
issues.liferay.com/browse/LPE-17030 (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2021-33338?: CVE-2021-33338 is a high-severity vulnerability in Liferay Digital Experience Platform, classified under Cross-Site Request Forgery (CSRF). CVSS score: 7.5/10. Published 2021-08-04.
How severe is CVE-2021-33338?: High severity. CVSS v3 base score is 7.5 out of 10.