CVE-2026-55566

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...

CVE-2026-55547

Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs omits SystemPrivilege.ControlAccess checks from IamApi.listRoles, IamApi.getRole, and IamApi.listPrivileges in yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java. Any authenticated account can call GET /api/roles, GET...

CVE-2026-55521

Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs omits authorization checks in IndexesApi.listPacketIndex, IndexesApi.listEventIndex, Cop1Api.disable, Cop1Api.resume, Cop1Api.initialize, Cop1Api.updateConfig, and TimeApi.setTime. An authenticated low-privilege user can read...

CVE-2026-55559

Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs inserts templateArgs from POST /api/instances and PATCH /api/instances/instance into YAML through VarStatement.append in yamcs-core/src/main/java/org/yamcs/templating/VarStatement.java without YAML-context escaping. The...

CVE-2026-55521

creationtimestamp| type| source ---|---|--- 2026-08-28 18:35:19+00:00| published-proof-of-concept| https://github.com/yamcs/yamcs/security/advisories/GHSA-962x-ccwf-8x6p...

CVE-2026-55547

creationtimestamp| type| source ---|---|--- 2026-08-28 18:35:17+00:00| published-proof-of-concept| https://github.com/yamcs/yamcs/security/advisories/GHSA-cvw4-55pp-3hfq...

CVE-2026-55559

creationtimestamp| type| source ---|---|--- 2026-08-28 18:35:13+00:00| published-proof-of-concept| https://github.com/yamcs/yamcs/security/advisories/GHSA-73mf-m39p-wpm9 2026-08-28 22:08:32+00:00| seen| https://bsky.app/profile/stemshop.bsky.social/post/3mu6esqhrrz25...

CVE-2026-55565

creationtimestamp| type| source ---|---|--- 2026-08-28 18:35:10+00:00| published-proof-of-concept| https://github.com/yamcs/yamcs/security/advisories/GHSA-c64q-hj4j-375f 2026-08-28 22:08:40+00:00| seen| https://bsky.app/profile/stemshop.bsky.social/post/3mu6esyapvs2b...

Yamcs has DOM XSS in Extension Routing

Attack type: Unauthenticated remote Impact: Execution of arbitrary JavaScript in a user’s browser. Affected components: extension.matcher.ts:12, extension.component.ts:40, app.component.ts:134. Yamcs is vulnerable to cross-site scripting in the /ext URL endpoint. By inputting specially crafted co...

EUVD-2026-67845

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...

CVE-2026-55566

Yamcs , a mission control framework, is affected by a DOM XSS in the /ext URL route (affected versions prior to 5.12.8 and 5.13.2 ). The root cause is that attacker-controlled data in files extension.matcher.ts, extension.component.ts, and app.component.ts is rendered via innerHTML without valida...

CVE-2026-55566 Yamcs: DOM XSS in Extension Routing

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...

Yamcs vulnerable to authenticated remote code execution via unescaped StreamSQL `LIKE` pattern compiled by Janino (`LikeExpression`)

Summary Yamcs compiles StreamSQL query expressions to Java at runtime with Janino. The LIKE operator inserts the user-supplied pattern into the generated Java unescaped, inside a "..." literal, so a pattern containing " breaks out and injects arbitrary Java e.g. a static block that runs an OS...

CVE-2026-55565

Yamcs (mission control framework) is vulnerable to authenticated remote code execution in LikeExpression.fillCode_getValueReturn, where an unescaped StreamSQL LIKE pattern is injected into Java source compiled at runtime by Janino (SimpleCompiler.cook). A " in the pattern breaks out of the genera...

CVE-2026-55565 Yamcs: Authenticated remote code execution via unescaped StreamSQL `LIKE` pattern compiled by Janino (`LikeExpression`)

Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs LikeExpression.fillCodegetValueReturn in yamcs-core/src/main/java/org/yamcs/yarch/streamsql/LikeExpression.java inserts an unescaped LIKE pattern into Java source compiled by Expression.getCompiledExpression through...

EUVD-2026-67844

Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs LikeExpression.fillCodegetValueReturn in yamcs-core/src/main/java/org/yamcs/yarch/streamsql/LikeExpression.java inserts an unescaped LIKE pattern into Java source compiled by Expression.getCompiledExpression through...

GHSA-73MF-M39P-WPM9 Yamcs vulnerable to Remote Code Execution via instance-template argument YAML injection (createInstance)

Summary templateArgs sent to POST /api/instances and PATCH /api/instances/instance are written into the rendered instance config as raw text, then parsed as YAML and loaded. Yamcs instantiates each services: entry by its class:, so injecting YAML through a template arg lets you add a services:...

Yamcs vulnerable to Remote Code Execution via instance-template argument YAML injection (createInstance)

Summary templateArgs sent to POST /api/instances and PATCH /api/instances/instance are written into the rendered instance config as raw text, then parsed as YAML and loaded. Yamcs instantiates each services: entry by its class:, so injecting YAML through a template arg lets you add a services:...

CVE-2026-55559 Yamcs: Remote Code Execution via instance-template argument YAML injection (createInstance)

Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs inserts templateArgs from POST /api/instances and PATCH /api/instances/instance into YAML through VarStatement.append in yamcs-core/src/main/java/org/yamcs/templating/VarStatement.java without YAML-context escaping. The...

EUVD-2026-67843

Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs inserts templateArgs from POST /api/instances and PATCH /api/instances/instance into YAML through VarStatement.append in yamcs-core/src/main/java/org/yamcs/templating/VarStatement.java without YAML-context escaping. The...