CVE-2025-43736: Liferay Portal · Unthrottled Resource Allocation
Affects Liferay PortalSource CVE Database V5
Not known to be exploited · CVSS 6.9 Medium.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 20% 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:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/RE:LExploitation evidence
Disclosed: evidence found.
CVE published 12 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
- Immediate mitigation should involve implementing strict file upload size validation and throttling at the application or web server level to enforce the 300 KB limit effectively.
- Monitor and log file upload activities to detect abnormal upload sizes or volumes that could indicate exploitation attempts.
- Apply network-level rate limiting and web application firewall (WAF) rules to restrict excessive upload requests from single IP addresses or user accounts.
- Engage with Liferay support or vendor channels to obtain official patches or updates addressing this vulnerability as soon as they become available.
- Review and harden user registration and profile update workflows to include additional validation and possibly CAPTCHA to reduce automated abuse.
- Conduct regular performance monitoring of Liferay Portal instances to identify unusual resource consumption patterns early.
- Consider isolating Liferay Portal instances behind load balancers or reverse proxies that can provide additional filtering and throttling capabilities.
- Educate administrators and users about the vulnerability and encourage reporting of any unusual system behavior related to profile picture uploads.
Description
A Denial Of Service via File Upload (DOS) vulnerability in the Liferay Portal 7.4.3.0 through 7.4.3.132, and Liferay DXP 2025.Q1.0 through 2025.Q1.8, 2024.Q4.0 through 2024.Q4.7, 2024.Q3.0 through 2024.Q3.13, 2024.Q2.0 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.16 and 7.4 GA through update 92 allows a user to upload more than 300kb profile picture into the user profile. This size more than the noted max 300kb size. This extra amount of data can make Liferay slower.