Liferay Portal ComboServlet denial of service via large file combination
The ComboServlet in Liferay Portal 7.4.0 through 7.4.3.111, and older unsupported versions, and Liferay DXP 2023.Q4.0 through 2023.Q4.2, 2023.Q3.1 through 2023.Q3.5, 7.4 GA through update 92, 7.3 GA through update 35, and older unsupported versions does not limit the number or size of the files it will combine, which allows remote attackers to create very large responses that lead to a denial of service attack via the URL query string.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | com.liferay.portal:com.liferay.portal.impl | < 97.0.0 | 97.0.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-62254
- https://github.com/liferay/liferay-portal/commit/45e1a3a757bc38f7b9f8034909e90f1a56f160a5
- https://github.com/liferay/liferay-portal/commit/8328aaf7c6ebb3f76c7982256e028caeb48fb664
- https://github.com/liferay/liferay-portal/commit/85d63e9d6e47e11074046cc4459d3b1ab3370536
- https://github.com/liferay/liferay-portal/commit/def502837297d155ec2fd61044288e75230dd235
- https://github.com/liferay/liferay-portal
- https://liferay.atlassian.net/browse/LPE-17867
- https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-62254
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-22- Platform
- Java / Kotlin (Maven)
- Package
com.liferay.portal:com.liferay.portal.impl- Disclosed
- 24.10.2025
- Updated
- 11.10.2026 12:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-q95h-87j6-273x - CC BY 4.0
Vulnerability history: com.liferay.portal:com.liferay.portal.impl
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 18
- First → latest
- 04.2022 11.2025
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- High 3
- Medium 15
Disclosures per year
- 2022: 5
- 2023: 0
- 2024: 1
- 2025: 12
- 2026: 0
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Liferay Portal ComboServlet denial of service via large file combination this entry
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