Liferay Portal vulnerable to cross-site scripting in the Calendar widget

published 2025-09-29 13 mo ago modified 2026-10-18 21 d ago also GHSA-pf86-4w35-cj89 , EUVD-2025-31649

cvss: 5.4; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 12%
public exploits: 0; none known

Multiple cross-site scripting (XSS) vulnerabilities in the Calendar widget when inviting users to a event in Liferay Portal 7.4.3.35 through 7.4.3.110, and Liferay DXP 2023.Q4.0 through 2023.Q4.4, 2023.Q3.1 through 2023.Q3.6, 7.4 update 35 through update 92, and 7.3 update 25 through update 35 allow remote attackers to inject arbitrary web script or HTML via a crafted payload injected into a user’s (1) First Name, (2) Middle text, or (3) Last Name text fields.

Patch / fix

fixed in 4

maven com.liferay.portal:release.portal.bom 7.4.3.111-ga111
maven com.liferay:com.liferay.calendar.web 5.0.88
liferay digital_experience_platform 2023.Q3.7, 2023.Q4.5
liferay liferay_portal 7.4.3.111

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 13 mo ago (2025-09-30)

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	4.8	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CNA	4.0	4.8	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
maven	com.liferay.portal:release.portal.bom	>=7.4.3.35-ga35, <7.4.3.111-ga111	7.4.3.111-ga111
maven	com.liferay:com.liferay.calendar.web	>=5.0.45, <5.0.88	5.0.88

Affected products

Liferay Portal
Liferay DXP

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

liferay.dev /portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-43820
web, vendor-advisory
nvd.nist.gov /vuln/detail/CVE-2025-43820
advisory
github.com /liferay/liferay-portal
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary