RCE in Orthanc Explorer 2
CVE-2026-10173
A weakness has been identified in Orthanc Explorer 2 up to 1.12.0. The impacted element is an unknown function of the file WebApplication/src/components/StudyList.vue of the component URL Handler. This manipulation of the argument remote-source causes cross site scripting. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. Patch name: 21f78ce5da668bf5233efcd1896ec7c6e3b22eae. Applying a patch is the recommended action to fix this issue.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (18.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Orthanc Explorer 2 — versions 1.0, 1.1, 1.2
Weakness classification (CWE)
References
- vuldb.com/vuln/367430 (technical-description, vdb-entry)
- vuldb.com/vuln/367430/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-10173 (third-party-advisory)
- vuldb.com/submit/819559 (third-party-advisory)
- github.com/orthanc-server/orthanc-explorer-2/issues/108 (issue-tracking, exploit)
- github.com/rafaelsouzars/orthanc-explorer-2/commit/21f78ce5da668bf5233efcd1896e… (patch)
Frequently asked questions
- What is CVE-2026-10173?
- CVE-2026-10173 is a medium-severity vulnerability in Orthanc Explorer 2, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2026-05-31.
- How severe is CVE-2026-10173?
- Medium severity. CVSS v3 base score is 4.3 out of 10.