Widely used healthcare software; IDOR could enable cross-record note edits, affecting patient data integrity.
CVE-2026-34055
IDOR in OpenEMR web UI allows unauthorized update/delete of patient notes.
Is CVE-2026-34055 being exploited?
Not confirmed. CVE-2026-34055 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.27% probability of exploitation in the next 30 days.
How severe is CVE-2026-34055?
CVE-2026-34055 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-34055?
Yes. A fix has been recorded for CVE-2026-34055. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-34055 affect?
CVE-2026-34055 affects OpenEMR <= 8.0.0.3. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-34055?
Upgrade to 8.0.0.3+ and review note access controls.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthorized updates/deletes of patient notes due to missing access checks; potential data breach and record integrity issues.
Patch when possible
- affected< 8.0.0.3
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.