Description
Yamcs is a mission control framework. Prior to 5.12.7, a server-side code injection vulnerability existed in the Yamcs algorithm evaluation engine org.yamcs.algorithms.JavaExprAlgorithmExecutionFactory, which dynamically compiled and evaluated user-controlled algorithm text through the Janino compiler without enforcing a secure sandbox, so an authenticated user with the ChangeMissionDatabase privilege could override an existing algorithm's text via the mission database REST API and inject Java code (for example using java.lang.Runtime) to achieve remote code execution on the underlying host operating system. This issue is fixed in versions 5.12.7 and 5.13.0, which disable algorithm editing by default.
Affected products
spaceapplications: yamcs
References6
- github.com/yamcs/yamcs/security/advisories/GHSA-524g-x36v-9wm6 ExploitVendor Advisory
- github.com/yamcs/yamcs/security/advisories/GHSA-524g-x36v-9wm6 ExploitVendor Advisory
- github.com/yamcs/yamcs/commit/3c550348f866af4675d2ba4a51d8d12b7… Patch
- github.com/yamcs/yamcs/commit/4ff8fda642ea8c3309a4d3f379aa77b76… Patch
- github.com/yamcs/yamcs/releases/tag/yamcs-5.12.7 Release Notes
- github.com/yamcs/yamcs/releases/tag/yamcs-5.13.0 Release Notes
Metrics
- CVSS 3.1
-
9.1
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 67 · as of 15 November 2026
- CWE
- CWE-94
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