Security readout for executives and security teams
Plain-English summary
This CVE is an XSS flaw in Liferay page administration. A remote attacker could submit crafted page-name input that causes script or HTML to run in another user's browser. Business risk depends on who can reach and use the affected administration page.
Executive priority
Treat as a focused remediation item for affected Liferay deployments, especially administrator-facing systems. It is not supported as emergency-level from the provided evidence because severity, CVSS, and exploitation data are missing.
Technical view
The flaw affects the Layout module page administration page in Liferay Portal 7.3.4, 7.3.5, and Liferay DXP 7.2 before fix pack 11 and 7.3 before fix pack 1. The vulnerable parameter is _com_liferay_layout_admin_web_portlet_GroupPagesPortlet_name.
Likely exposure
Exposure is likely limited to organizations running the named Liferay Portal or DXP versions with reachable page administration functionality. The source bundle does not confirm authentication requirements, internet exposure, or default exploitability.
Exploitation context
The sources describe remote script or HTML injection, but provide no CVSS score, exploit details, or evidence of active exploitation. The CVE is not listed as CISA KEV in the provided bundle.
Researcher notes
Key uncertainty is context: the bundle identifies the vulnerable parameter and versions, but not privilege requirements, stored versus reflected behavior, sanitization details, or patched Portal version mapping. Validate against vendor guidance before declaring non-exposure.
Mitigation direction
- Apply Liferay DXP 7.2 fix pack 11 or later where applicable.
- Apply Liferay DXP 7.3 fix pack 1 or later where applicable.
- For Liferay Portal 7.3.4 or 7.3.5, follow the linked Liferay advisory.
- Limit page administration access to trusted users while remediation is planned.
Validation and detection
- Inventory Liferay Portal and DXP versions across production and non-production systems.
- Check whether affected page administration functionality is reachable by remote users.
- Verify installed DXP fix pack level against the affected version ranges.
- Review web logs for unusual requests involving the vulnerable parameter.
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-2021-29048 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.
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
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.