Vulnerability record
CVE-2026-126491
The short answer
CVE-2026-126491 affects openemr openemr and is rated high (CVSS 8.3). It is not in CISA's KEV catalog; EPSS puts the chance of exploitation in the next 30 days at 0.35%.
What it is
OpenEMR before 8.5.0 contains a stored SQL injection vulnerability in getByPatientDemographics() where layout_options field_id values are concatenated into the patient search WHERE clause. Attackers with Layout Editor access can plant a malicious field_id, allowing any authenticated low-privilege user to exfiltrate data from patient_data and users_secure tables.
Weakness: CWE-89.
Severity
8.3 high
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Exploited (CISA KEV)
Not listed
CISA lists confirmed exploitation only
EPSS, next 30 days
0.35%
Higher than 29% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Attack requirements
- None
- Privileges required
- High
- User interaction
- None
- Confidentiality impact
- High
- Integrity impact
- Low
- Availability impact
- None
Affected products
openemr. NVD's record lists the exact affected versions.
References
Questions
Is CVE-2026-126491 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog as of 2026-11-14. FIRST's EPSS estimates a 0.35% chance of exploitation in the next 30 days.
How do I fix CVE-2026-126491?
Follow the vendor advisory in the references below. NVD lists the affected versions under its configurations.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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