CVE-2025-62255: Self Cross-site scripting (XSS) vulnerability on the edit Knowledge Base article page in Liferay Portal 7.4.0

Q: How do I fix CVE-2025-62255?

digital experience platform: upgrade to 7.3; liferay portal: upgrade to 7.4.3.102. Exact commands for each OS are on this page.

Q: Is CVE-2025-62255 being exploited?

CVE-2025-62255 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-62255 affect?

CVE-2025-62255 affects digital experience platform, liferay portal. Severity is medium (CVSS 6.1). Self Cross-site scripting (XSS) vulnerability on the edit Knowledge Base article page in Liferay Portal 7.4.0 through 7.4.3.101, and older unsupported versions, and Liferay DXP 2023.Q3.1 through 2023.Q3.5, 7.4 GA through update 92, and olde

Q: How urgent is CVE-2025-62255?

Priority 24/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADEUPGRADE

CVE-2025-62255 is a medium-severity flaw (CVSS 6.1) affecting digital experience platform, liferay portal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Self Cross-site scripting (XSS) vulnerability on the edit Knowledge Base article page in Liferay Portal 7.4.0 through 7.4.3.101, and older unsupported versions, and Liferay DXP 2023.Q3.1 through 2023.Q3.5, 7.4 GA through update 92, and older unsupported versions allows remote attackers to inject arbitrary web script or HTML via a crafted payload injected into an attachment's filename.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-10-23
Last modified	2026-10-18

Publisher (CNA): Liferay Inc. · Vendor: liferay

Last updated 2026-10-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-10-23 19:15 UTCPublished CVE record published
2026-10-18 21:10 UTCUpdated Record last modified

liferay digital experience platform UPGRADE

Affected: < 7.3 · 7.3 · 7.3 fix_pack_1 · 7.3 fix_pack_2 · 7.3 service_pack_1 · 7.3 service_pack_2 · 7.3 service_pack_3 · 7.3 update1

Fixed in: 7.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy digital-experience-platform || rpm -q digital-experience-platform || digital-experience-platform --version

2. UPGRADE to 7.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade digital-experience-platform

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade digital-experience-platform

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

liferay liferay portal UPGRADE

Affected: < 7.4.3.102

Fixed in: 7.4.3.102

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy liferay-portal || rpm -q liferay-portal || liferay-portal --version

2. UPGRADE to 7.4.3.102 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade liferay-portal

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade liferay-portal

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-62255?

digital experience platform: upgrade to 7.3; liferay portal: upgrade to 7.4.3.102. Exact commands for each OS are on this page.

Is CVE-2025-62255 being exploited?

CVE-2025-62255 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-62255 affect?

CVE-2025-62255 affects digital experience platform, liferay portal. Severity is medium (CVSS 6.1). Self Cross-site scripting (XSS) vulnerability on the edit Knowledge Base article page in Liferay Portal 7.4.0 through 7.4.3.101, and older unsupported versions, and Liferay DXP 2023.Q3.1 through 2023.Q3.5, 7.4 GA through update 92, and olde

How urgent is CVE-2025-62255?

Priority 24/100. No elevated risk signals yet.

Software pages

Liferay vulnerabilities

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References

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