CVE-2025-32951: io.jmix.rest:jmix-rest allows XSS in the /files Endpoint of the Generic REST API

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-04-22 · updated 2026-06-17
Weakness: CWE-79

Description

Jmix is a set of libraries and tools to speed up Spring Boot data-centric application development. In versions 1.0.0 to 1.6.1 and 2.0.0 to 2.3.4, the input parameter, which consists of a file path and name, can be manipulated to return the Content-Type header with text/html if the name part ends with .html. This could allow malicious JavaScript code to be executed in the browser. For a successful attack, a malicious file needs to be uploaded beforehand. This issue has been patched in versions 1.6.2 and 2.4.0. A workaround is provided on the Jmix documentation website.

Affected products

Haulmont Cuba Platform: from 6.2.0 before 7.2.23 — fixed in 7.2.23
Haulmont Cuba Rest Api: from 7.1.1 before 7.2.7 — fixed in 7.2.7
jmix-framework jmix: from 1.0.0 before 1.6.2; from 2.0.0 before 2.4.0 — fixed in 1.6.2, 2.4.0
Haulmont Jpa Web Api: from 1.0.0 before 1.1.1 — fixed in 1.1.1

How to fix

Upgrade to a fixed version: Haulmont Cuba Platform 7.2.23; Haulmont Cuba Rest Api 7.2.7; jmix-framework jmix 1.6.2, 2.4.0; Haulmont Jpa Web Api 1.1.1. Check the vendor advisory for mitigations.

References

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