How severe is CVE-2023-40191?

CVE-2023-40191 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-40191 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40191?

CVE-2023-40191 primarily affects Liferay Liferay Portal. In total, 56 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-40191?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2023-40191 have an EU (EUVD) identifier?

Yes. CVE-2023-40191 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0502.

When was CVE-2023-40191 published?

CVE-2023-40191 was published on 2024-02-21 and last updated on 2026-06-17.

CVE-2023-40191

CVE-2023-40191 is a critical-severity vulnerability in Liferay Liferay Portal with a CVSS 3.x base score of 9.0. 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: Critical (CVSS 3.x base score 9.0)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0502
Weakness: CWE-79
Affected product: Liferay Liferay Portal
Published: 2024-02-21
Last modified: 2026-06-17

Description

Reflected cross-site scripting (XSS) vulnerability in the instance settings for Accounts in Liferay Portal 7.4.3.44 through 7.4.3.97, and Liferay DXP 2023.Q3 before patch 6, and 7.4 update 44 through 92 allows remote attackers to inject arbitrary web script or HTML via a crafted payload injected into the “Blocked Email Domains” text field

Frequently asked questions

What is CVE-2023-40191?: Reflected cross-site scripting (XSS) vulnerability in the instance settings for Accounts in Liferay Portal 7.4.3.44 through 7.4.3.97, and Liferay DXP 2023.Q3 before patch 6, and 7.4 update 44 through 92 allows remote attackers to inject arbitrary web script or HTML via a crafted payload injected into the “Blocked Email Domains” text field
How severe is CVE-2023-40191?: CVE-2023-40191 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-40191 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40191?: CVE-2023-40191 primarily affects Liferay Liferay Portal. In total, 56 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-40191?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2023-40191 have an EU (EUVD) identifier?: Yes. CVE-2023-40191 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0502.
When was CVE-2023-40191 published?: CVE-2023-40191 was published on 2024-02-21 and last updated on 2026-06-17.

References

https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/cve-2023-40191

Affected products (56)

cpe:2.3:a:liferay:liferay_portal:*:*:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update44:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update45:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update46:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update47:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update48:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update49:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update50:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update51:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update52:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update53:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update54:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update55:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update56:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update57:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update58:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update59:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update60:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update61:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update62:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update63:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update64:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update65:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update66:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update67:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update68:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update69:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update70:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update71:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update72:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update73:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update74:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update75:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update76:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update77:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update78:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update79:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update80:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update81:*:*:*:*:*:*
cpe:2.3:a:liferay:digital_experience_platform:7.4:update82:*:*:*:*:*:*

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