{"items":[{"id":"NVI-00015385","kind":"vulnerability","title":"Yamcs Core API has Multiple Missing Function Level Access Control vulnerabilities","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-962x-ccwf-8x6p","CVE-2026-55521"],"plain_summary":"GitHub lists this reviewed advisory for org.yamcs:yamcs-core, org.yamcs:yamcs-core. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-246ec4c1b9fb34bf9e561f2ea23a46af"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-08-28T17:09:36.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-62dc28aa35f21bf2459f9ca9096bf6a1"},{"kind":"CVSS","as_of":"2026-09-08T21:08:37.320Z","value":"8.8 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-246ec4c1b9fb34bf9e561f2ea23a46af"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-62dc28aa35f21bf2459f9ca9096bf6a1","url":"https://github.com/advisories/GHSA-962x-ccwf-8x6p","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-962x-ccwf-8x6p","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:23.004Z"},{"id":"sr-246ec4c1b9fb34bf9e561f2ea23a46af","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55521","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-55521","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T01:48:26.418Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-62dc28aa35f21bf2459f9ca9096bf6a1"],"technology":"org.yamcs:yamcs-core","known_exclusions":[],"conditions_summary":"### Summary\nMultiple Missing Function Level Access Control vulnerabilities exist in the Yamcs Core API. These vulnerabilities allow any authenticated user, regardless of their assigned roles or privileges (e.g., an unprivileged \"Guest\"), to bypass intended access controls. An attacker can exploit these flaws to extract sensitive telemetry metadata, disrupt satellite communication link protocols (COP-1), and manipulate the global simulation time, severely impacting the confidentiality, integrity, and availability of the system.\n\n### Details\nYamcs utilizes a robust Role-Based Access Control (RBAC) model with `SystemPrivilege` and `ObjectPrivilege` to restrict administrative actions and data retrieval. However, three critical API controllers completely omit these authorization checks before executing internal business logic:\n\n1.  **`IndexesApi.java` (Information Disclosure):** Unlike `PacketsApi.java`, which filters results using `ctx.user.hasObjectPrivilege(ObjectPrivilegeType.ReadPacket, packetName)`, methods in `IndexesApi` (such as `listPacketIndex` and `listEventIndex`) directly retrieve and return archive records from the `CcsdsTmIndex` without verifying if the user has the requ","public_affected_ranges":[">= 5.13.0, <= 5.13.1"]},{"certainty":"source_listed","source_ids":["sr-62dc28aa35f21bf2459f9ca9096bf6a1"],"technology":"org.yamcs:yamcs-core","known_exclusions":[],"conditions_summary":"### Summary\nMultiple Missing Function Level Access Control vulnerabilities exist in the Yamcs Core API. These vulnerabilities allow any authenticated user, regardless of their assigned roles or privileges (e.g., an unprivileged \"Guest\"), to bypass intended access controls. An attacker can exploit these flaws to extract sensitive telemetry metadata, disrupt satellite communication link protocols (COP-1), and manipulate the global simulation time, severely impacting the confidentiality, integrity, and availability of the system.\n\n### Details\nYamcs utilizes a robust Role-Based Access Control (RBAC) model with `SystemPrivilege` and `ObjectPrivilege` to restrict administrative actions and data retrieval. However, three critical API controllers completely omit these authorization checks before executing internal business logic:\n\n1.  **`IndexesApi.java` (Information Disclosure):** Unlike `PacketsApi.java`, which filters results using `ctx.user.hasObjectPrivilege(ObjectPrivilegeType.ReadPacket, packetName)`, methods in `IndexesApi` (such as `listPacketIndex` and `listEventIndex`) directly retrieve and return archive records from the `CcsdsTmIndex` without verifying if the user has the requ","public_affected_ranges":["<= 5.12.7"]}],"null_published_at":"2026-11-08T19:53:44.041Z","source_updated_at":"2026-08-28T17:09:36.000Z","source_disclosed_at":"2026-08-28T17:09:35.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-02T09:56:23.004Z"},{"id":"NVI-00015385","kind":"vulnerability","title":"Yamcs Core API has Multiple Missing Function Level Access Control vulnerabilities","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-962x-ccwf-8x6p","CVE-2026-55521"],"plain_summary":"GitHub lists this reviewed advisory for org.yamcs:yamcs-core, org.yamcs:yamcs-core. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-62dc28aa35f21bf2459f9ca9096bf6a1"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-08-28T17:09:36.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-62dc28aa35f21bf2459f9ca9096bf6a1"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-62dc28aa35f21bf2459f9ca9096bf6a1","url":"https://github.com/advisories/GHSA-962x-ccwf-8x6p","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-962x-ccwf-8x6p","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:23.004Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-62dc28aa35f21bf2459f9ca9096bf6a1"],"technology":"org.yamcs:yamcs-core","known_exclusions":[],"conditions_summary":"### Summary\nMultiple Missing Function Level Access Control vulnerabilities exist in the Yamcs Core API. These vulnerabilities allow any authenticated user, regardless of their assigned roles or privileges (e.g., an unprivileged \"Guest\"), to bypass intended access controls. An attacker can exploit these flaws to extract sensitive telemetry metadata, disrupt satellite communication link protocols (COP-1), and manipulate the global simulation time, severely impacting the confidentiality, integrity, and availability of the system.\n\n### Details\nYamcs utilizes a robust Role-Based Access Control (RBAC) model with `SystemPrivilege` and `ObjectPrivilege` to restrict administrative actions and data retrieval. However, three critical API controllers completely omit these authorization checks before executing internal business logic:\n\n1.  **`IndexesApi.java` (Information Disclosure):** Unlike `PacketsApi.java`, which filters results using `ctx.user.hasObjectPrivilege(ObjectPrivilegeType.ReadPacket, packetName)`, methods in `IndexesApi` (such as `listPacketIndex` and `listEventIndex`) directly retrieve and return archive records from the `CcsdsTmIndex` without verifying if the user has the requ","public_affected_ranges":[">= 5.13.0, <= 5.13.1"]},{"certainty":"source_listed","source_ids":["sr-62dc28aa35f21bf2459f9ca9096bf6a1"],"technology":"org.yamcs:yamcs-core","known_exclusions":[],"conditions_summary":"### Summary\nMultiple Missing Function Level Access Control vulnerabilities exist in the Yamcs Core API. These vulnerabilities allow any authenticated user, regardless of their assigned roles or privileges (e.g., an unprivileged \"Guest\"), to bypass intended access controls. An attacker can exploit these flaws to extract sensitive telemetry metadata, disrupt satellite communication link protocols (COP-1), and manipulate the global simulation time, severely impacting the confidentiality, integrity, and availability of the system.\n\n### Details\nYamcs utilizes a robust Role-Based Access Control (RBAC) model with `SystemPrivilege` and `ObjectPrivilege` to restrict administrative actions and data retrieval. However, three critical API controllers completely omit these authorization checks before executing internal business logic:\n\n1.  **`IndexesApi.java` (Information Disclosure):** Unlike `PacketsApi.java`, which filters results using `ctx.user.hasObjectPrivilege(ObjectPrivilegeType.ReadPacket, packetName)`, methods in `IndexesApi` (such as `listPacketIndex` and `listEventIndex`) directly retrieve and return archive records from the `CcsdsTmIndex` without verifying if the user has the requ","public_affected_ranges":["<= 5.12.7"]}],"null_published_at":"2026-11-03T10:03:31.362Z","source_updated_at":"2026-08-28T17:09:36.000Z","source_disclosed_at":"2026-08-28T17:09:35.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-02T09:56:23.004Z"}],"next_cursor":null,"snapshot_revision":"42594"}