CVE-2026-40509

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.19% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 8.6% of scored records. A rank, not a probability.

NVD base score

5.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/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 analysis status

Deferred. NVD last modified this record on 2026-10-27.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-08-19 14:53Z2 MO AGO

Last updated

2026-10-01 15:19Z28 DAYS AGO

Reserved

2026-04-13

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-352Cross-Site Request Forgery (CSRF)Compound

Data version

5.2

Document digest

5c64d6978b633eb36d7be5bc6d80011de8c9c36c3fe1a04a109fcacde4a9a2f3

• github.comGitHub Security Advisory (GHSA-wffp-pj5h-xqwp)https://github.com/openemr/openemr/security/advisories/GHSA-wffp-pj5h-xqwpvendor-advisory
• github.comOpenEMR v8_3_0 Release Noteshttps://github.com/openemr/openemr/releases/tag/v8_3_0release-notes
• github.comPatch Commithttps://github.com/openemr/openemr/commit/f760adc7bddaf9d118e1a0d40590e686783ed21bpatch
• www.vulncheck.comhttps://www.vulncheck.com/advisories/openemr-csrf-via-dicom-viewer-web-path-parameterthird-party-advisory