CVE-2026-44632: Yamcs code injection in JavaExprAlgorithmExecutionFactory

CVE-2026-44632 · Severity: critical · CVSS 9.1 · Published 2026-07-16

Yamcs is a mission control framework used for space missions and complex telemetry systems. A vulnerability in its algorithm engine allows an authorized user to inject and execute malicious code on the server hosting the software. This could lead to a complete takeover of the mission control server, potentially disrupting operations or exposing sensitive mission data.

Technologies: org.yamcs:yamcs-core (Maven), Yamcs. Vendors: Maven, Yamcs.

Quick answers

Is CVE-2026-44632 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-44632 being exploited in the wild.
How severe is CVE-2026-44632?
Critical severity, with a CVSS score of 9.1, published 16 July 2026.
Which products and versions are affected?
org.yamcs:yamcs-core (Maven) < 5.12.7, ECOSYSTEM:introduced=0,fixed=5.12.7; Yamcs < 5.12.7, < 5.12.7, < 5.13.0.
Is there a fix for CVE-2026-44632?
Yes. org.yamcs:yamcs-core (Maven): upgrade to 5.12.7 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-44632 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-44632?
Check whether you run org.yamcs:yamcs-core (Maven) or Yamcs at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • org.yamcs:yamcs-core (Maven): upgrade to 5.12.7 or later
    # set org.yamcs:yamcs-core to 5.12.7 in your pom.xml or build.gradle

Technical details

A server-side code injection vulnerability exists in the Yamcs algorithm evaluation engine, specifically within the 'org.yamcs.algorithms.JavaExprAlgorithmExecutionFactory' component. The engine uses the Janino compiler to dynamically compile and evaluate user-provided algorithm text without a secure sandbox. An authenticated attacker with 'ChangeMissionDatabase' privileges can use the mission database REST API to override algorithm text with malicious Java code (e.g., using java.lang.Runtime). This results in remote code execution (RCE) on the host operating system. The vulnerability is addressed in versions 5.12.7 and 5.13.0 by disabling algorithm editing by default.

Affected products

  • Yamcs Yamcs < 5.12.7, < 5.13.0

Identifiers

  • CVE-2026-44632
  • GHSA-524g-x36v-9wm6

Timeline

  • 2026-07-16: disclosed
  • 2026-07-16: advisory
  • 2026-05-21: patched

References

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