{"items":[{"id":"NVI-00003416","kind":"vulnerability","title":"LibreNMS allows stored XSS in Alert Template name field","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-vxq6-8cwm-wj99","CVE-2025-55296"],"plain_summary":"OSV carries this publisher advisory for librenms/librenms. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 25.8.0 for librenms/librenms. Confirm the publisher’s latest guidance.","source_ids":["sr-3da945180edeabbc6930298cfa0a4dea"],"action_type":"vendor_patch","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":[],"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-3da945180edeabbc6930298cfa0a4dea","url":"https://github.com/advisories/GHSA-vxq6-8cwm-wj99","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-vxq6-8cwm-wj99","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.380Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3da945180edeabbc6930298cfa0a4dea"],"technology":"librenms/librenms","known_exclusions":[],"conditions_summary":"### Summary\n\nA stored Cross-Site Scripting (XSS) vulnerability exists in LibreNMS (alert(document.cookie)</script> \n```\n\nand filling the other fields with arbitrary content (e.g., `test`), once the template is saved, the script is executed. This confirms that user input is stored and later rendered without proper output encoding.\n\nThis vulnerability can be exploited for session hijacking, data theft, or other malicious actions targeting other admin users.\n\n---\n### PoC\n\n1. Log in to LibreNMS using an account with the **admin role**.\n2. Navigate to: `http://localhost:8000/templates`.\n3. Click the **\"Create new alert template\"** button.\n4. Input the following into the **Template name** field:\n\n   ```\n   <scrip","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 25.8.0"]}],"null_published_at":"2026-10-31T22:12:48.016Z","source_updated_at":"2025-08-18T23:12:15.682Z","source_disclosed_at":"2025-08-18T22:25:29.000Z","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":"2026-10-31T21:42:41.380Z"}],"next_cursor":null,"snapshot_revision":"42594"}