A AegiFlow
MEDIUMCVSS 4.3EPSS 0.3%

CVE-2026-55566

CVE-2026-55566 updated by NVD

Published
2026-08-28
Modified
2026-09-10
EPSS percentile
19%
Sources
github-advisory, nvd

Summary

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.

Affected packages

EcosystemPackageAffected versionsFixed versions
Mavenorg.yamcs:yamcs-core5.13.2, 5.12.8

Remediation: Upgrade to 5.13.2 or later.

References

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.