CVE-2025-43752: Liferay Portal · Unthrottled Resource Allocation
Affects Liferay PortalSource CVE Database V5
Not known to be exploited · CVSS 5.3 Medium.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 26% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:LExploitation evidence
Disclosed: evidence found.
CVE published 22 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Liferay Portal | Affected
| Fixed in– |
AI-suggested
European organizations should implement immediate compensating controls to mitigate this vulnerability until an official patch is released. These include: 1) Configuring web application firewalls (WAFs) or reverse proxies to limit the number and size of file uploads per user or IP address, effectively throttling upload requests. 2) Implementing rate limiting and upload quotas at the application or infrastructure level to prevent excessive resource consumption. 3) Monitoring and alerting on unusual spikes in file upload activity or storage usage within the document_library repository. 4) Restricting upload permissions to trusted users only, if feasible, to reduce exposure. 5) Conducting regular audits of uploaded files to detect and remove excessive or malicious content. 6) Isolating the document_library storage on dedicated volumes with capacity alerts to prevent system-wide impact. 7) Keeping Liferay Portal instances updated and closely monitoring vendor advisories for patches addressing this vulnerability. 8) Employing network segmentation to limit access to the portal from untrusted networks. These measures go beyond generic advice by focusing on practical controls tailored to the specific resource exhaustion vector of this vulnerability.
Description
Liferay Portal 7.4.0 through 7.4.3.132, and Liferay DXP 2025.Q1.0 through 2025.Q1.4, 2024.Q4.0 through 2024.Q4.7, 2024.Q3.1 through 2024.Q3.13, 2024.Q2.0 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.15 and 7.4 GA through update 92 allow users to upload an unlimited amount of files through the object entries attachment fields, the files are stored in the document_library allowing an attacker to cause a potential DDoS.