How severe is CVE-2021-33331?

CVE-2021-33331 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-33331 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-33331?

CVE-2021-33331 primarily affects Liferay Digital Experience Platform. In total, 91 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-33331?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-33331 published?

CVE-2021-33331 was published on 2021-08-03 and last updated on 2026-06-17.

CVE-2021-33331

CVE-2021-33331 is a medium-severity vulnerability in Liferay Digital Experience Platform with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-601.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 5.8
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-601
Affected product: Liferay Digital Experience Platform
Published: 2021-08-03
Last modified: 2026-06-17

Description

Open redirect vulnerability in the Notifications module in Liferay Portal 7.0.0 through 7.3.1, and Liferay DXP 7.0 before fix pack 94, 7.1 before fix pack 19 and 7.2 before fix pack 8, allows remote attackers to redirect users to arbitrary external URLs via the 'redirect' parameter.

Frequently asked questions

What is CVE-2021-33331?: Open redirect vulnerability in the Notifications module in Liferay Portal 7.0.0 through 7.3.1, and Liferay DXP 7.0 before fix pack 94, 7.1 before fix pack 19 and 7.2 before fix pack 8, allows remote attackers to redirect users to arbitrary external URLs via the 'redirect' parameter.
How severe is CVE-2021-33331?: CVE-2021-33331 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-33331 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-33331?: CVE-2021-33331 primarily affects Liferay Digital Experience Platform. In total, 91 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-33331?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-33331 published?: CVE-2021-33331 was published on 2021-08-03 and last updated on 2026-06-17.

References

Affected products (91)

cpe:2.3:a:liferay:digital_experience_platform:7.0:-:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_13:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_14:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_24:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_25:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_26:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_27:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_28:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_3:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_30:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_33:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_35:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_36:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_39:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_40:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_41:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_42:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_43:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_44:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_45:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_46:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_47:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_48:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_49:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_50:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_51:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_52:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_53:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_54:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_56:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_57:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_58:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_59:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_60:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_61:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_64:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_65:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_66:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_67:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.0:fix_pack_68:*:*:*:*:*:*

More vulnerabilities in Liferay Digital Experience Platform

CVE-2025-43766 — Critical (CVSS 9.8): The Liferay Portal 7.4.0 through 7.3.3.131, and Liferay DXP 2024.Q4.0, 2024.Q3.1 through 2024.Q3.13, 2024.Q2.0 through…
CVE-2025-3594 — Critical (CVSS 9.8): Path traversal vulnerability with the downloading and installation of Xuggler in Liferay Portal 7.0.0 through 7.4.3.4,…
CVE-2024-8980 — Critical (CVSS 9.6): The Script Console in Liferay Portal 7.0.0 through 7.4.3.101, and Liferay DXP 2023.Q3.1 through 2023.Q3.4, 7.4 GA…
CVE-2024-26269 — Critical (CVSS 9.6): Cross-site scripting (XSS) vulnerability in the Frontend JS module's portlet.js in Liferay Portal 7.2.0 through…
CVE-2023-42498 — Critical (CVSS 9.6): Reflected cross-site scripting (XSS) vulnerability in the Language Override edit screen in Liferay Portal 7.4.3.8…
CVE-2023-42496 — Critical (CVSS 9.6): Reflected cross-site scripting (XSS) vulnerability on the add assignees to a role page in Liferay Portal 7.3.3 through…

All CVEs affecting Liferay Digital Experience Platform →

Other CWE-601 (Open Redirect) vulnerabilities

CVE-2018-3774 — Critical (CVSS 10.0): Incorrect parsing in url-parse <1.4.3 returns wrong hostname which leads to multiple vulnerabilities such as SSRF, Open…
CVE-2019-25282 — Critical (CVSS 9.8): V-SOL GPON/EPON OLT Platform v2.03 contains an open redirect vulnerability in the script that allows attackers to…
CVE-2020-36912 — Critical (CVSS 9.8): Plexus anblick Digital Signage Management 3.1.13 contains an open redirect vulnerability in the 'PantallaLogin' script…
CVE-2025-43526 — Critical (CVSS 9.8): This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac…
CVE-2025-55031 — Critical (CVSS 9.8): Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An…
CVE-2024-22891 — Critical (CVSS 9.8): Nteract v.0.28.0 was discovered to contain a remote code execution (RCE) vulnerability via the Markdown link.

Browse all CWE-601 (Open Redirect) vulnerabilities →