{"id":"CVE-2026-55566","title":"Yamcs is a mission control framework","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…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","cwe":["CWE-79"],"vendor":"yamcs","product":"org.yamcs:yamcs-core","affected":["org.yamcs:yamcs-core >= 5.13.0, <= 5.13.1","org.yamcs:yamcs-core <= 5.12.7"],"patched":["org.yamcs:yamcs-core 5.13.2","org.yamcs:yamcs-core 5.12.8"],"published":"2026-08-28","updated":"2026-09-08","sourceUpdated":"2026-09-08T21:08:37.320","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55566","references":[{"url":"https://github.com/yamcs/yamcs/commit/8e18e279d8ce761c21f4f67bbd06a1bff804d297","label":"security-advisories@github.com"},{"url":"https://github.com/yamcs/yamcs/commit/ecf34a4e2ccbe085e6ceff0253595b24d5ecb4aa","label":"security-advisories@github.com"},{"url":"https://github.com/yamcs/yamcs/releases/tag/yamcs-5.12.8","label":"security-advisories@github.com"},{"url":"https://github.com/yamcs/yamcs/releases/tag/yamcs-5.13.2","label":"security-advisories@github.com"},{"url":"https://github.com/yamcs/yamcs/security/advisories/GHSA-9272-wg2r-7xmx","label":"security-advisories@github.com"},{"url":"https://github.com/yamcs/yamcs/security/advisories/GHSA-9272-wg2r-7xmx","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/advisories/GHSA-9272-wg2r-7xmx"}],"tags":["nvd","ghsa","maven"],"epss":0.00274,"epssPercentile":0.1999,"aliases":["GHSA-9272-wg2r-7xmx"],"ecosystem":"maven","ingestedAt":"2026-08-28T18:23:37.922Z","slug":"CVE-2026-55566","body":"## Overview\n\nYamcs 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-55566)\n\nAffected packages:\n\n- `org.yamcs:yamcs-core >= 5.13.0, <= 5.13.1`\n- `org.yamcs:yamcs-core <= 5.12.7`\n\nPatched in:\n\n- `org.yamcs:yamcs-core 5.13.2`\n- `org.yamcs:yamcs-core 5.12.8`\n\nSource: https://github.com/advisories/GHSA-9272-wg2r-7xmx","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}