Security readout for executives and security teams
Plain-English summary
CVE-2021-33330 is a Liferay CORS/session-authentication flaw that can expose user-specific protected data. A remote attacker may obtain sensitive details, including a targeted user’s email address and current CSRF token, when the user is authenticated only through the portal session.
Executive priority
Treat as a targeted information-disclosure risk for affected Liferay portals. It is not KEV-listed, but exposure of CSRF tokens and user email addresses can increase account and workflow abuse risk.
Technical view
Affected versions are Liferay Portal 7.2.0 through 7.3.2 and Liferay DXP 7.2 before fix pack 9. The issue allows access to CORS-protected resources under portal-session-only authentication, resulting in sensitive information disclosure. No CVSS, CWE, or vendor-provided severity is included in the source bundle.
Likely exposure
Organizations running the listed Liferay Portal or DXP versions are potentially exposed, especially internet-facing portals with authenticated users. Exposure should be verified against deployed product, version, and fix pack level.
Exploitation context
The source bundle describes remote attacker access to protected resources and disclosure of email address and CSRF token. It does not state active exploitation, and CISA KEV status is false.
Researcher notes
Evidence is limited to the CVE description and Liferay references. The bundle does not provide CVSS scoring, CWE classification, exploit maturity, or detailed patch notes for every affected Portal version.
Mitigation direction
- Upgrade Liferay DXP 7.2 to fix pack 9 or later.
- Move Liferay Portal deployments outside versions 7.2.0 through 7.3.2 per vendor guidance.
- Review Liferay’s advisory and issue record for supported remediation details.
- Prioritize internet-facing authenticated portals for remediation first.
Validation and detection
- Inventory Liferay Portal and DXP versions and fix pack levels.
- Confirm whether any deployment matches the affected version ranges.
- Review portal authentication configuration for portal-session-only user flows.
- Check vendor advisory status before accepting compensating controls.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-33330 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/120747720CVE reference · x_refsource_CONFIRM
- https://issues.liferay.com/browse/LPE-17127CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.