CVE-2026-55566
Description
Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs processes attacker-controlled data from the /ext URL route in yamcs-web/src/main/webapp/projects/webapp/src/app/core/routes/extension.matcher.ts, extension.component.ts, and app.component.ts without checking registered plugin IDs before DOM rendering through innerHTML. A crafted URL can execute JavaScript when opened by a user. The script can read data available to the Yamcs web application and perform actions in the user context. This issue is fixed in versions 5.12.8 and 5.13.2.
How to fix
- org.yamcs:yamcs-core5.13.2, 5.12.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| org.yamcs:yamcs-coreMaven | 5.13.0 ≤ v < 5.13.2, v < 5.12.8 | 5.13.2, 5.12.8 |
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Attack Surface Management
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