CVE-2026-126474

Description

OpenEMR before 8.5.0 contains a reflected cross-site scripting vulnerability in the ACL module that allows attackers to execute JavaScript in authenticated sessions via the module_id parameter. Attackers can deliver crafted acl/index or acl/acl links that inject unencoded input into inline script blocks, stealing non-HttpOnly session cookies and modifying ACL configuration.

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

• 5.1CVSS 4.0, Mediumfrom the CNA (VulnCheck)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
• 6.1CVSS 3.1, Mediumfrom the CNA (VulnCheck)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

Timeline

1. 13 Nov 2026 Published

Weakness

• CWE-79

References

• GitHub Security Advisory (GHSA-mccm-83g2-7v57)vendor-advisory
• VulnCheck Advisory: OpenEMR before 8.5.0 Reflected XSS via ACL Module module_id Parameterthird-party-advisory