Security readout for executives and security teams
Plain-English summary
CVE-2021-33326 is a cross-site scripting issue in Liferay’s Frontend JS module. A remote attacker could inject script or HTML through a modal window title. The source bundle does not provide a CVSS score, exploit maturity details, or business impact specifics, so urgency depends on whether affected Liferay versions are still deployed.
Executive priority
Treat this as a targeted remediation item, not a crisis signal, unless affected Liferay systems are public-facing or handle sensitive sessions. The absence of CVSS and exploitation evidence lowers confidence, but unpatched XSS in business portals can still create account and data-risk pathways.
Technical view
The vulnerability affects Liferay Portal 7.3.4 and earlier, and Liferay DXP 7.0 before fix pack 96, 7.1 before fix pack 20, and 7.2 before fix pack 9. The injection point is the title of a modal window in the Frontend JS module. No CWE or CVSS vector is included in the supplied sources.
Likely exposure
Exposure is likely limited to organizations running the listed Liferay Portal or DXP versions. Public-facing portals, authenticated user portals, or administrative workflows using modal windows may be relevant, but the bundle does not identify required privileges, affected pages, or attack preconditions.
Exploitation context
The bundle states remote attackers can inject arbitrary web script or HTML. It does not cite active exploitation, CISA KEV listing, public exploit code, proof-of-concept availability, or exploitation in the wild.
Researcher notes
Key unknowns are attack preconditions, whether the XSS is stored or reflected, privilege requirements, and fixed Portal release mapping beyond the DXP fix-pack thresholds. Use the vendor references as the primary source of truth before testing or declaring exposure.
Mitigation direction
- Inventory Liferay Portal and DXP versions across internet-facing and internal deployments.
- Apply the relevant Liferay vendor fix pack or supported fixed release.
- For DXP 7.0, verify fix pack 96 or later is installed.
- For DXP 7.1, verify fix pack 20 or later is installed.
- For DXP 7.2, verify fix pack 9 or later is installed.
- If patch status is unclear, consult Liferay’s advisory and support guidance.
Validation and detection
- Confirm product edition and exact Liferay version for each deployment.
- Review vendor advisory LPE-17093 against deployed versions and fix packs.
- Check whether affected systems expose user-controllable modal titles.
- Verify remediation by confirming installed fix pack or upgraded release.
- Review web logs and security tooling for suspicious script injection attempts.
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.
CVE-2021-33326 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/120747869CVE reference · x_refsource_CONFIRM
- https://issues.liferay.com/browse/LPE-17093CVE 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.