HOMEVULNERABILITIESCVE-2026-34055
MEDIUM

CVE-2026-34055

CWE-639Published: March 26, 2026· Updated: Mar 26, 2026

6.3
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:3.4th

Official Description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0.3, the legacy patient notes functions in `library/pnotes.inc.php` perform updates and deletes using `WHERE id = ?` without verifying that the note belongs to a patient the user is authorized to access. Multiple web UI callers pass user-controlled note IDs directly to these functions. This is the same class of vulnerability as CVE-2026-25745 (REST API IDOR), but affects the web UI code paths. Version 8.0.0.3 patches the issue.

NVD Source

Technical Analysis

CVE-2026-34055 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Affected Vendors & Products

open-emr1 product
openemr
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/openemr/openemr/commit/214c9b4585a6f1c8c22750172d47f0e258fec0bf
ADVISORYhttps://github.com/openemr/openemr/security/advisories/GHSA-8gj5-r8vm-mghq

All References (3)

→
https://github.com/openemr/openemr/commit/214c9b4585a6f1c8c22750172d47f0e258fec0bfPatch
→
https://github.com/openemr/openemr/releases/tag/v8_0_0_3Product
→
https://github.com/openemr/openemr/security/advisories/GHSA-8gj5-r8vm-mghqVendor Advisory

Quick Facts

CVE IDCVE-2026-34055
CVSS Score6.3 / 10
SeverityMEDIUM
WeaknessCWE-639
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMar 26, 2026

Related CVEs (CWE-639)

CVE-2026-29200
9.9
CVE-2026-45552
9.9
CVE-2026-52782
9.9
CVE-2026-55255
KEV9.9
CVE-2017-20223
9.8
CVE-2026-12073
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-34055 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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