How severe is CVE-2021-35463?

CVE-2021-35463 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-35463 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35463?

CVE-2021-35463 affects Liferay Liferay Portal. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-35463?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-35463 published?

CVE-2021-35463 was published on 2021-08-04 and last updated on 2026-06-17.

CVE-2021-35463

CVE-2021-35463 is a medium-severity vulnerability in Liferay Liferay Portal with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Liferay Liferay Portal
Published: 2021-08-04
Last modified: 2026-06-17

Description

Cross-site scripting (XSS) vulnerability in the Frontend Taglib module in Liferay Portal 7.4.0 allows remote attackers to inject arbitrary web script or HTML into the management toolbar search via the `keywords` parameter.

Frequently asked questions

What is CVE-2021-35463?: Cross-site scripting (XSS) vulnerability in the Frontend Taglib module in Liferay Portal 7.4.0 allows remote attackers to inject arbitrary web script or HTML into the management toolbar search via the `keywords` parameter.
How severe is CVE-2021-35463?: CVE-2021-35463 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-35463 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35463?: CVE-2021-35463 affects Liferay Liferay Portal. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-35463?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-35463 published?: CVE-2021-35463 was published on 2021-08-04 and last updated on 2026-06-17.

References

https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/120850663

Affected products (1)

cpe:2.3:a:liferay:liferay_portal:7.4.0:*:*:*:*:*:*:*

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