Is there a public exploit for CVE-2026-126451?

No public exploit for CVE-2026-126451 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-126451?

CVE-2026-126451 scores CVSS 8.5 (v4.0), rated high.

What does CVE-2026-126451 affect?

CVE-2026-126451 affects OpenEMR OpenEMR.

8.5 High

OpenEMR before 8.5.0 contains a stored cross-site scripting vulnerability that allows portal patients to run JavaScript in staff sessions…

CVE-2026-126451

OpenEMR before 8.5.0 contains a stored cross-site scripting vulnerability that allows portal patients to run JavaScript in staff sessions by injecting javascript: URLs into document templatedata. Attackers can submit an encounterForm value rendered unsanitized into an iframe src by DocumentTemplateRender, letting the script read PHI and CSRF tokens and call staff or admin endpoints.

Assessment

CVSS: 8.5 (v4.0)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 13 November 2026
Last updated: 13 November 2026
Affected: OpenEMR · OpenEMR
Assigner: VulnCheck

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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