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MEDIUM severity

Cuba has a DoS in the File StorageGHSA-w3mp-6vrj-875g

MEDIUMFix: cuba-platform/cuba@42b6c00

GHSA-w3mp-6vrj-875g is a medium-severity (CVSS 6.5) CWE-770 vulnerability in com.haulmont.cuba:cuba-core. A fix is available for com.haulmont.cuba:cuba-core — see the affected versions and patch details below.

Also known asCVE-2025-32959
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-w3mp-6vrj-875g.

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs46th percentile — riskier than 46% of all scored CVEsHighest risk
0.00%0.35%0.69%1.04%0.4%0.5%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
☕com.haulmont.cuba:cuba-core

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Impact

The local file storage implementation does not restrict the size of uploaded files. An attacker could exploit this by uploading excessively large files, potentially causing the server to run out of space and return HTTP 500 error, resulting in a denial of service.

The severity of the vulnerability is mitigated by the fact that the application UI and the generic REST API are typically accessible only to authenticated users.

Patches

The problem has been fixed in CUBA 7.2.23.

Workarounds

A workaround for those who are unable to upgrade: Disable Files Endpoint in CUBA Application.

References

Files Functionality Vulnerabilities :: Jmix Documentation

Similar vulnerability in Jmix: DoS in the Local File Storage · Advisory · jmix-framework/jmix

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavencom.haulmont.cuba:cuba-coreall versions7.2.23com.haulmont.cuba:cuba-core:7.2.23

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.haulmont.cuba:cuba-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update com.haulmont.cuba:cuba-core to 7.2.23 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-w3mp-6vrj-875g is resolved across your whole dependency graph.

  3. Workarounds

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

### Impact The local file storage implementation does not restrict the size of uploaded files. An attacker could exploit this by uploading excessively large files, potentially causing the server to run out of space and return HTTP 500 error, resulting in a denial of service. The severity of the vulnerability is mitigated by the fact that the application UI and the generic REST API are typically accessible only to authenticated users. ### Patches The problem has been fixed in CUBA 7.2.23. ### Workarounds A workaround for those who are unable to upgrade: [Disable Files Endpoint in CUBA App
O3 Security · Impact-Aware SCA

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Cuba has a DoS in the File Storage (Medium 6.5)