What’s Vulnerable › Vulnerabilities

CVE-2022-28977

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-09-22 · updated 2026-07-09
• Weakness: CWE-601

Description

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.

Affected products

• Liferay Digital Experience Platform: 7.0, 7.0-fix_pack_100, 7.0-fix_pack_101, 7.0-fix_pack_91, 7.0-fix_pack_92, 7.0-fix_pack_93 (+27)
• Liferay DXP: 7.3, 7.3-sp1, 7.3-sp2
• Liferay Portal: from 7.3.1 before 7.4.3.4 — fixed in 7.4.3.4

How to fix

Upgrade to a fixed version: Liferay Portal 7.4.3.4. Check the vendor advisory for mitigations.

References

• https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/cve-2022-28977-htmlutil.escaperedirect-circumvention-with-multiple-forward-slash
• https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/cve-2022-28977-htmlutil.escaperedirect-circumvention-with-multiple-forward-slash

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