CVE-2026-126487 json
OpenEMR before 8.5.0 Global Configuration Override via user_settings.php
published 18d ago modified yesterday also EUVD-2026-124937 , GHSA-v997-jphq-wvvr
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository openemr/openemr. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 34%
- public exploits
- 0
- none known
Summary
OpenEMR before 8.5.0 contains an authorization bypass vulnerability that allows authenticated users to override system-wide global configuration values by storing global-prefixed keys through library/ajax/user_settings.php. Attackers can submit lab or target parameters with global: prefixed setting names to disable audit logging, weaken password policies, or alter security-sensitive settings persistently for their sessions.
Patch / fix
- openemr openemr 8.5.0
Is CVE-2026-126487 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-14).
Exploits and checks
- github.com https://github.com/openemr/openemr/security/advisories/GHSA-v997-jphq-wvvr referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/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 |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- openemr openemr
Classification
- Weakness
-
- CWE-269 Improper Privilege Management
References
-
github.com
/openemr/openemr/security/advisories/GHSA-v997-jphq-wvvr
vendor-advisory, exploit, mitigation, advisory
-
vulncheck.com
/advisories/openemr-before-8.5.0-global-configuration-override-via-user-settings-php
third-party-advisory
Sources
- CVE List CVE-2026-126487
- NVD CVE-2026-126487
- Maintainer advisory GHSA-v997-jphq-wvvr
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of openemr/openemr published their own advisory on GitHub. Reviewed sources take precedence over it.