{"items":[{"id":"NVI-00013106","kind":"vulnerability","title":"Headroom vulnerable to Cross-Site WebSocket Hijacking (CSWSH)","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-h46j-26q3-rggf","CVE-2026-71416"],"plain_summary":"GitHub lists this reviewed advisory for headroom-ai. 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-0785b02a74b429dba97cbea1a80f8a24"],"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":"2026-10-02T23:09:15.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-626e67ba668bd1b87217c868bb495811"},{"kind":"EPSS","as_of":"2026-11-01T12:00:16.000Z","value":"0.174%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.06801. Missing scores are unknown.","source_id":"sr-0785b02a74b429dba97cbea1a80f8a24"}],"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-626e67ba668bd1b87217c868bb495811","url":"https://github.com/advisories/GHSA-h46j-26q3-rggf","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-h46j-26q3-rggf","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T01:40:00.567Z"},{"id":"sr-0785b02a74b429dba97cbea1a80f8a24","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-71416","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:28:32.286Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-626e67ba668bd1b87217c868bb495811"],"technology":"headroom-ai","known_exclusions":[],"conditions_summary":"### Summary\nThe Headroom WebSocket server does not validate the `Origin` header of incoming client WebSocket requests before forwarding the request to the upstream server, allowing malicious WebSocket clients to perform arbitrary LLM requests without authentication. This can be exploited by a malicious WebSocket client executed in a traditional or headless browser such as lightpanda, if the browser has access to the Headroom proxy and the OpenAI API key is stored in the `OPENAI_API_KEY` environment variable.\n\n### Details\nThe Headroom server defines a WebSocket handler at `ws://:8787/v1/responses` in `headroom/providers/proxy_routes.py`:\n```python\n    @app.websocket(\"/v1/responses\")\n    async def openai_responses_ws(websocket: WebSocket):\n        await proxy.handle_openai_responses_ws(websocket)\n```\nIn the `handle_openai_responses_ws()` method of the `OpenAIHandlerMixin` class, the `Origin` header of the WebSocket client handshake is not checked or verified before calling `websocket.accept()`, which grants any WebSocket client (including malicious clients) access to the server:\n```python\n    async def handle_openai_responses_ws(self, websocket: WebSocket) -> None:\n   ","public_affected_ranges":["< 0.35.0"]}],"null_published_at":"2026-11-02T20:21:07.829Z","source_updated_at":"2026-10-02T23:09:15.000Z","source_disclosed_at":"2026-10-02T23:09:15.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-11-01T01:40:00.567Z"},{"id":"NVI-00013106","kind":"vulnerability","title":"Headroom vulnerable to Cross-Site WebSocket Hijacking (CSWSH)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-h46j-26q3-rggf","CVE-2026-71416"],"plain_summary":"GitHub lists this reviewed advisory for headroom-ai. 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-626e67ba668bd1b87217c868bb495811"],"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":"2026-10-02T23:09:15.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-626e67ba668bd1b87217c868bb495811"}],"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-626e67ba668bd1b87217c868bb495811","url":"https://github.com/advisories/GHSA-h46j-26q3-rggf","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-h46j-26q3-rggf","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T01:40:00.567Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-626e67ba668bd1b87217c868bb495811"],"technology":"headroom-ai","known_exclusions":[],"conditions_summary":"### Summary\nThe Headroom WebSocket server does not validate the `Origin` header of incoming client WebSocket requests before forwarding the request to the upstream server, allowing malicious WebSocket clients to perform arbitrary LLM requests without authentication. This can be exploited by a malicious WebSocket client executed in a traditional or headless browser such as lightpanda, if the browser has access to the Headroom proxy and the OpenAI API key is stored in the `OPENAI_API_KEY` environment variable.\n\n### Details\nThe Headroom server defines a WebSocket handler at `ws://:8787/v1/responses` in `headroom/providers/proxy_routes.py`:\n```python\n    @app.websocket(\"/v1/responses\")\n    async def openai_responses_ws(websocket: WebSocket):\n        await proxy.handle_openai_responses_ws(websocket)\n```\nIn the `handle_openai_responses_ws()` method of the `OpenAIHandlerMixin` class, the `Origin` header of the WebSocket client handshake is not checked or verified before calling `websocket.accept()`, which grants any WebSocket client (including malicious clients) access to the server:\n```python\n    async def handle_openai_responses_ws(self, websocket: WebSocket) -> None:\n   ","public_affected_ranges":["< 0.35.0"]}],"null_published_at":"2026-11-01T07:29:12.921Z","source_updated_at":"2026-10-02T23:09:15.000Z","source_disclosed_at":"2026-10-02T23:09:15.000Z","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":"2026-11-01T01:40:00.567Z"}],"next_cursor":null,"snapshot_revision":"42594"}