CVE-2025-43764: Self-ReDoS (Regular expression Denial of Service) exists with Role Name search field of Kaleo Designer portlet

Routine

MEDIUM 6.5UPGRADEUPGRADE

CVE-2025-43764 is a medium-severity flaw (CVSS 6.5) 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-ReDoS (Regular expression Denial of Service) exists with Role Name search field of Kaleo Designer portlet JavaScript in Liferay Portal 7.4.0 through 7.4.3.131, and Liferay DXP 2024.Q4.0 through 2024.Q4.1, 2024.Q3.0 through 2024.Q3.13, 2024.Q2.1 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.20 and 7.4 GA through update 92, which allows authenticated users with permissions to update Kaleo Workflows to enter a malicious Regex pattern causing th

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-1333
Published	2025-08-23
Last modified	2026-06-17

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

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-08-23 05:15 UTCPublished CVE record published
2026-06-17 09:24 UTCUpdated Record last modified

liferay digital experience platform UPGRADE

Affected: >= 2024.Q1.1 and <= 2024.Q1.20 · >= 2024.q2.0 and <= 2024.q2.13 · >= 2024.q3.1 and <= 2024.q3.13 · >= 2024.Q4.0 and < 2024.Q4.2 · 7.4 · 7.4 update1 · 7.4 update10 · 7.4 update11

Fixed in: 2024.Q4.2

Safe to downgrade to: a release before 7.4

1. Check installed version

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

2. UPGRADE to 2024.Q4.2 (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.

3. If no update is available yet, DOWNGRADE to a release before 7.4 (Debian / Ubuntu)

apt-cache madison digital-experience-platform sudo apt install digital-experience-platform=<VERSION_BEFORE_7.4> sudo apt-mark hold digital-experience-platform

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list digital-experience-platform sudo dnf downgrade digital-experience-platform-<VERSION_BEFORE_7.4> sudo dnf versionlock add digital-experience-platform

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

liferay liferay portal UPGRADE

Affected: >= 7.4.0 and < 7.4.3.132

Fixed in: 7.4.3.132

Safe to downgrade to: a release before 7.4.0

1. Check installed version

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

2. UPGRADE to 7.4.3.132 (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.

3. If no update is available yet, DOWNGRADE to a release before 7.4.0 (Debian / Ubuntu)

apt-cache madison liferay-portal sudo apt install liferay-portal=<VERSION_BEFORE_7.4.0> sudo apt-mark hold liferay-portal

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list liferay-portal sudo dnf downgrade liferay-portal-<VERSION_BEFORE_7.4.0> sudo dnf versionlock add liferay-portal

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-43764?

digital experience platform: upgrade to 2024.Q4.2; liferay portal: upgrade to 7.4.3.132. Exact commands for each OS are on this page.

Is CVE-2025-43764 being exploited?

CVE-2025-43764 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-2025-43764 affect?

CVE-2025-43764 affects digital experience platform, liferay portal. Severity is medium (CVSS 6.5). Self-ReDoS (Regular expression Denial of Service) exists with Role Name search field of Kaleo Designer portlet JavaScript in Liferay Portal 7.4.0 through 7.4.3.131, and Liferay DXP 2024.Q4.0 through 2024.Q4.1, 2024.Q3.0 through 2024.Q3.13,

How urgent is CVE-2025-43764?

Priority 29/100. No elevated risk signals yet.

Software pages

Liferay vulnerabilities

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References

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