What’s Vulnerable › Vulnerabilities

CVE-2020-15839

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-09-22 · updated 2026-06-17
• Weakness: CWE-434

Description

Liferay Portal before 7.3.3, and Liferay DXP 7.1 before fix pack 18 and 7.2 before fix pack 6, does not restrict the size of a multipart/form-data POST action, which allows remote authenticated users to conduct denial-of-service attacks by uploading large files.

Affected products

• Liferay Digital Experience Platform: 7.1, 7.1-fix_pack_1, 7.1-fix_pack_10, 7.1-fix_pack_11, 7.1-fix_pack_12, 7.1-fix_pack_13 (+19)
• Liferay Portal: before 7.3.3 — fixed in 7.3.3

How to fix

Upgrade to a fixed version: Liferay Portal 7.3.3. Check the vendor advisory for mitigations.

References

• https://issues.liferay.com/browse/LPE-17029
• https://issues.liferay.com/browse/LPE-17055
• https://portal.liferay.dev/learn/security/known-vulnerabilities
• https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/119784928
• https://issues.liferay.com/browse/LPE-17029
• https://issues.liferay.com/browse/LPE-17055
• https://portal.liferay.dev/learn/security/known-vulnerabilities
• https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/119784928

Get alerted when CVE-2020-15839 or the next vulnerability affects your stack