{"items":[{"id":"NVI-00016398","kind":"vulnerability","title":"Open WebUI: Any authenticated user can cancel another user's chat generation via the chat delete endpoint","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-3vf6-64vr-3g56","CVE-2026-70483"],"plain_summary":"GitHub lists this reviewed advisory for open-webui. 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-0f0e6fcdc82be7981e5bd5194afee205"],"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":"2026-08-05T04:28:38.000Z","value":"3.1 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-6dcb3a0ad81f67237afc2bb89cfb21d3"},{"kind":"CVSS","as_of":"2026-09-18T14:46:24.803Z","value":"3.1 LOW (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-0f0e6fcdc82be7981e5bd5194afee205"},{"kind":"CVSS","as_of":"2026-09-18T14:46:24.803Z","value":"4.3 MEDIUM (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-0f0e6fcdc82be7981e5bd5194afee205"}],"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-6dcb3a0ad81f67237afc2bb89cfb21d3","url":"https://github.com/advisories/GHSA-3vf6-64vr-3g56","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-3vf6-64vr-3g56","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T09:58:09.980Z"},{"id":"sr-0f0e6fcdc82be7981e5bd5194afee205","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70483","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-70483","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T15:07:54.921Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-6dcb3a0ad81f67237afc2bb89cfb21d3"],"technology":"open-webui","known_exclusions":[],"conditions_summary":"## Summary\n`DELETE /api/v1/chats/{id}` cancelled a chat's in-flight tasks before it checked whether the caller was allowed to delete that chat. Any authenticated user who knew another user's chat id could therefore abort that user's running model response, title generation or tag generation. The deletion itself was still refused, so the only missing control was on the cancellation side effect.\n\n## Preconditions\nDefault configuration, no special deployment shape. The attacker needs a normal account with the default `user` role and nothing else: the `chat.delete` permission is not required, and revoking it does not prevent the cancellation. The attacker also needs the victim's chat id, which is returned by the read-only shared-chat endpoint when a chat or a folder has been shared with them - otherwise enumerating the chat id requires guessing the chat id or brute forcing it, and the victim must have a generation running at that moment.\n\n## Impact\nA user can repeatedly interrupt another user's generations without any write access to the target chat. Nothing is deleted, modified or disclosed, and the victim can simply regenerate, so the effect is limited to availability of in-flight re","public_affected_ranges":[">= 0.9.6, < 0.11.0"]}],"null_published_at":"2026-11-08T19:53:44.025Z","source_updated_at":"2026-08-05T04:28:38.000Z","source_disclosed_at":"2026-08-04T19:54:49.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-03T09:58:09.980Z"},{"id":"NVI-00016398","kind":"vulnerability","title":"Open WebUI: Any authenticated user can cancel another user's chat generation via the chat delete endpoint","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-3vf6-64vr-3g56","CVE-2026-70483"],"plain_summary":"GitHub lists this reviewed advisory for open-webui. 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-6dcb3a0ad81f67237afc2bb89cfb21d3"],"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":"2026-08-05T04:28:38.000Z","value":"3.1 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-6dcb3a0ad81f67237afc2bb89cfb21d3"}],"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-6dcb3a0ad81f67237afc2bb89cfb21d3","url":"https://github.com/advisories/GHSA-3vf6-64vr-3g56","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-3vf6-64vr-3g56","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T09:58:09.980Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-6dcb3a0ad81f67237afc2bb89cfb21d3"],"technology":"open-webui","known_exclusions":[],"conditions_summary":"## Summary\n`DELETE /api/v1/chats/{id}` cancelled a chat's in-flight tasks before it checked whether the caller was allowed to delete that chat. Any authenticated user who knew another user's chat id could therefore abort that user's running model response, title generation or tag generation. The deletion itself was still refused, so the only missing control was on the cancellation side effect.\n\n## Preconditions\nDefault configuration, no special deployment shape. The attacker needs a normal account with the default `user` role and nothing else: the `chat.delete` permission is not required, and revoking it does not prevent the cancellation. The attacker also needs the victim's chat id, which is returned by the read-only shared-chat endpoint when a chat or a folder has been shared with them - otherwise enumerating the chat id requires guessing the chat id or brute forcing it, and the victim must have a generation running at that moment.\n\n## Impact\nA user can repeatedly interrupt another user's generations without any write access to the target chat. Nothing is deleted, modified or disclosed, and the victim can simply regenerate, so the effect is limited to availability of in-flight re","public_affected_ranges":[">= 0.9.6, < 0.11.0"]}],"null_published_at":"2026-11-04T10:04:27.940Z","source_updated_at":"2026-08-05T04:28:38.000Z","source_disclosed_at":"2026-08-04T19:54:49.000Z","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":"2026-11-03T09:58:09.980Z"}],"next_cursor":null,"snapshot_revision":"42594"}