Arbitrary Code Injection Affecting org.yamcs:yamcs-core package, versions [,5.12.8)[5.13.0,5.13.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published29 Aug 2026
- disclosed28 Aug 2026
- creditUnknown
Introduced: 28 Aug 2026
NewCVE-2026-55565 (opens in a new tab)How to fix?
Upgrade org.yamcs:yamcs-core to version 5.12.8, 5.13.2 or higher.
Overview
Affected versions of this package are vulnerable to Arbitrary Code Injection via the LikeExpression process. An attacker can execute arbitrary operating system commands by supplying a crafted pattern containing unescaped characters that are injected into dynamically generated Java code at runtime. This allows code execution with the privileges of the application process through endpoints that compile user input into Java source without proper escaping.