Liferay Portal Allows Cross-Site Scripting (XSS) via the SimpleCaptcha APIGHSA-hwp2-gvm5-452f
MEDIUMGHSA-hwp2-gvm5-452f is a medium-severity (CVSS 4.7) Cross-site Scripting (XSS) vulnerability in com.liferay.portal:release.portal.bom. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for com.liferay.portal:release.portal.bom — see the affected versions and patch details below.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
com.liferay.portal:release.portal.bomReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
In Liferay Portal before 7.1 CE GA4, an XSS vulnerability exists in the SimpleCaptcha API when custom code passes unsanitized input into the "url" parameter of the JSP taglib call <liferay-ui:captcha url="<%= url %>" /> or <liferay-captcha:captcha url="<%= url %>" />. Liferay Portal out-of-the-box behavior with no customizations is not vulnerable.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | com.liferay.portal:release.portal.bom | all versions | 7.1.0com.liferay.portal:release.portal.bom:7.1.0 |
Affected Products
liferay portalliferayResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Liferay Portal 7.1 CE GA=3 / SimpleCaptcha API - Cross-Site Scripting
by Valerio Brussani · Jun 11, 2019
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.liferay.portal:release.portal.bom, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update com.liferay.portal:release.portal.bom to 7.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-hwp2-gvm5-452f is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.
Frequently Asked Questions
Is GHSA-hwp2-gvm5-452f in your dependencies?
Find it across Maven, including transitive dependencies.