{"items":[{"id":"NVI-00018295","kind":"vulnerability","title":"Jupyter Server open redirect vulnerability","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9f66-54xg-pc2c","CVE-2020-26275"],"plain_summary":"GitHub lists this reviewed advisory for jupyter-server. 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-09f12e864b6cfb8e0d153681a7cf1374"],"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":"2026-05-19T20:24:17.000Z","value":"6.1 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-09f12e864b6cfb8e0d153681a7cf1374"}],"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-09f12e864b6cfb8e0d153681a7cf1374","url":"https://github.com/advisories/GHSA-9f66-54xg-pc2c","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-9f66-54xg-pc2c","publisher":"GitHub Advisory Database","observed_at":"2026-11-07T07:02:15.138Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-09f12e864b6cfb8e0d153681a7cf1374"],"technology":"jupyter-server","known_exclusions":[],"conditions_summary":"### Impact\n_What kind of vulnerability is it? Who is impacted?_\n\nOpen redirect vulnerability - a maliciously crafted link to a jupyter server could redirect the browser to a different website.\n\nAll jupyter servers running without a base_url prefix are technically affected, however, these maliciously crafted links can only be reasonably made for known jupyter server hosts. A link to your jupyter server may *appear* safe, but ultimately redirect to a spoofed server on the public internet. This same vulnerability was patched in upstream notebook v5.7.8.\n\n### Patches\n\n_Has the problem been patched? What versions should users upgrade to?_\n\nPatched in jupyter_server 1.1.1. If upgrade is not available, a workaround can be to run your server on a url prefix:\n\n```\njupyter server --ServerApp.base_url=/jupyter/\n```\n\n### References\n\nOWASP page on open redirects\n\n### For more information\n\nIf you have any questions or comments about this advisory, or vulnerabilities to report, please email our security list security@ipython.org.\n\nCredit: Yaniv Nizry from CxSCA grou","public_affected_ranges":["< 1.1.1"]}],"null_published_at":"2026-11-07T07:07:39.805Z","source_updated_at":"2026-05-19T20:24:17.000Z","source_disclosed_at":"2020-12-21T18:01:41.000Z","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":"2026-11-07T07:02:15.138Z"}],"next_cursor":null,"snapshot_revision":"42594"}