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CVE-2026-126475 OpenEMR before 8.5.0 Reflected XSS via searchEleNo in Auto-Suggest Endpoint

5.1 mediumEPSS 0.3%

Medium (5.1) in openemr openemr. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.

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OpenEMR before 8.5.0 contains a reflected cross-site scripting vulnerability that allows authenticated attackers to execute JavaScript by injecting payloads into the searchEleNo POST parameter of the application/index/search endpoint. Attackers can break out of unencoded HTML attributes in auto-suggest.phtml to inject event handlers that fire on DOM insertion, stealing non-HttpOnly session cookies and patient data.

Severity

CVSS 4.0

5.1 medium
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

CVSS 3.1

6.1 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
0.3% estimated probability of exploitation activity in the next 30 days; 18th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-79 Improper Neutralization of Input During Web Page Generation (Cross-site Scripting)
OWASP Top 10
A05:2025 Injection
Published
Modified
Assigned by
VulnCheck (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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CVE-2026-126475

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Affected

Versions

From the CNA's record in the CVE List.

ProductAffected
openemrbefore 8.5.0

Attack patterns (CAPEC)

  • CAPEC-63 Cross-Site Scripting (XSS) Likelihood: High · Severity: Very High
  • CAPEC-85 AJAX Footprinting Likelihood: High · Severity: Low
  • CAPEC-209 XSS Using MIME Type Mismatch Severity: Medium
  • CAPEC-588 DOM-Based XSS Likelihood: High · Severity: Very High
  • CAPEC-591 Reflected XSS Likelihood: High · Severity: Very High
  • CAPEC-592 Stored XSS Likelihood: High · Severity: Very High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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