OpenMRS ModuleResourcesServlet has Path Traversal that Leads to Arbitrary File Read

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

8.2 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N · score source

EPSS

• CVE-2026-40075: 0.56% estimated exploitation activity in the next 30 days; percentile 46.55 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Affected Versions version ≤ 2.7.8 (latest version at time of disclosure) https://github.com/openmrs/openmrs-core Impact The /openmrs/moduleResources/{moduleid} endpoint in OpenMRS Core is vulnerable to a path traversal attack. The ModuleResourcesServlet does not properly validate user-supplied path input, allowing an attacker to traverse directories and read arbitrary files from the server filesystem (e.g., /etc/passwd, application configuration files containing database credentials). This endpoint serves static module resources (CSS, JS, images) and is not protected by authentication filters, as these resources are required for rendering the login page. Therefore, this vulnerability can be exploited by an unauthenticated attacker. Note: Successful exploitation requires the target deployment to run on Apache Tomcat < 8.5.31, where the ..; path parameter bypass is not mitigated by the container. Deployments on Tomcat ≥ 8.5.31 / ≥ 9.0.10 are protected at the container level, though the…

Published by the source

4 May 2026, 17:18 UTC

Last modified by the source

8 May 2026, 15:36 UTC

Source last checked

26 Oct 2026, 16:45 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-jjgj-cx3q-pw4w

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2026-40075

Advisory: OpenMRS ModuleResourcesServlet has Path Traversal that Leads to Arbitrary File Read
IDs: CVE-2026-40075, GHSA-jjgj-cx3q-pw4w
Record: https://patchnext.com/advisories/cve-2026-40075 (revision 1, source checked 26 Oct 2026, 16:45 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.2)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Partial vendor fix; fixed versions by package: org.openmrs.web:openmrs-web 2.8.6. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.openmrs.web:openmrs-web: affected <= 2.7.8; >= 2.8.0, <= 2.8.5; fixed in 2.8.6

## Suggested inspection (read-only)
- Maven org.openmrs.web:openmrs-web: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.openmrs.web:openmrs-web.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-jjgj-cx3q-pw4w (GitHub-reviewed advisory GHSA-jjgj-cx3q-pw4w lists affected ranges: Maven org.openmrs.web:openmrs-web >=0 =2.8.0 <=2.8.5)

Commands are suggestions: review each one before running it.