CVE-2022-28977: HtmlUtil.escapeRedirect in Liferay Portal 7.3.1 through 7.4.2, and Liferay DXP 7.0 fix pack 91 through 101,...
HtmlUtil.escapeRedirect in Liferay Portal 7.3.1 through 7.4.2, and Liferay DXP 7.0 fix pack 91 through 101, 7.1 fix pack 17 through 25, 7.2 fix pack 5 through 14, and 7.3 before service pack 3 can be circumvented by using multiple forward slashes, which allows remote attackers to redirect users to arbitrary external URLs via the (1) 'redirect` parameter (2) `FORWARD_URL` parameter, and (3) others parameters that rely on HtmlUtil.escapeRedirect.
Security readout for executives and security teams
Plain-English summary
This flaw lets an attacker make some affected Liferay sites send users to attacker-chosen external websites. The main business risk is phishing or trust abuse using a legitimate Liferay domain. It is not listed as known exploited in CISA KEV in the supplied data.
Executive priority
Treat as a moderate-priority web trust issue. It is unlikely to cause direct server compromise from the supplied evidence, but can support phishing against customers, employees, or partners through trusted portal links.
Technical view
CVE-2022-28977 is a CWE-601 open redirect in HtmlUtil.escapeRedirect. Multiple forward slashes can bypass redirect validation in Liferay Portal and DXP versions named in the advisory, affecting redirect, FORWARD_URL, and similar parameters.
Likely exposure
Exposure is most likely on internet-facing Liferay Portal 7.3.1 through 7.4.2, or affected Liferay DXP fix pack and service pack ranges, especially pages or custom flows that consume redirect-style parameters.
Exploitation context
The supplied CVSS vector indicates network access, low complexity, no privileges, and required user interaction. The source bundle does not provide evidence of active exploitation or public weaponization.
Researcher notes
The source bundle names the vulnerable utility, bypass condition, affected version ranges, parameters, CWE, and CVSS. It does not include patch identifiers, exploit telemetry, or detailed vendor remediation steps beyond affected version boundaries.
Mitigation direction
Identify all Liferay Portal and DXP instances and compare versions to the affected ranges.
Review Liferay's advisory for fixed versions, service packs, or supported upgrade guidance.
Prioritize upgrades for internet-facing portals and authentication-adjacent redirect flows.
Audit custom code using HtmlUtil.escapeRedirect or redirect-style parameters.
Monitor for suspicious external redirects originating from trusted Liferay URLs.
Validation and detection
Confirm product version, fix pack, and service pack level for each Liferay deployment.
Check whether redirect, FORWARD_URL, or similar parameters are exposed on public routes.
Review application logs for unusual external redirect destinations.
Verify remediation by confirming instances are outside the affected version ranges.
Document any compensating controls when immediate upgrade is not possible.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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cwe · medium confidence lookup
CWE-601: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
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