OpenEMR before 8.5.0 Local File Disclosure via doc_lib.php PDF Renderer

published 2026-10-28 18d ago modified 2026-11-13 2d ago also EUVD-2026-125014 , GHSA-h4xc-pqg3-8459

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: 6.5; 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 29%
public exploits: 0; none known

OpenEMR before 8.5.0 passes authenticated user-controlled HTML from the doc_lib.php content parameter to mPDF, which resolves local files and nested SVG resources. Authenticated patients or core users can submit crafted CSS imports or php://filter SVG references to read arbitrary server files including credentials and OAuth keys.

Patch / fix

fixed in 1

openemr openemr 8.5.0

Is CVE-2026-126429 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 Fencer

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-14).

CVSS scores

assigned by	version	score	vector
CNA	4.0	7.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CNA	4.0	7.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

openemr openemr

Classification

Weakness

CWE-73 External Control of File Name or Path

References

github.com /openemr/openemr/security/advisories/GHSA-h4xc-pqg3-8459
vendor-advisory, advisory
vulncheck.com /advisories/openemr-before-8.5.0-local-file-disclosure-via-doc-lib-php-pdf-renderer
third-party-advisory

Sources

CVE List CVE-2026-126429
NVD CVE-2026-126429
Maintainer advisory GHSA-h4xc-pqg3-8459

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.