{"items":[{"id":"NVI-00015271","kind":"vulnerability","title":"Open WebUI: Any member with write access to a standard channel can edit or delete other members' messages","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-mj5r-jf49-m3w7","CVE-2026-70481"],"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-05ee601d742387383e370abcf0112cda"],"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":"2026-08-04T19:45:40.000Z","value":"5.4 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-4ea25c04ac85f81ecda681ccbb789b06"},{"kind":"CVSS","as_of":"2026-09-18T14:46:06.190Z","value":"5.4 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-05ee601d742387383e370abcf0112cda"}],"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-4ea25c04ac85f81ecda681ccbb789b06","url":"https://github.com/advisories/GHSA-mj5r-jf49-m3w7","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-mj5r-jf49-m3w7","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T09:58:09.980Z"},{"id":"sr-05ee601d742387383e370abcf0112cda","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70481","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-70481","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T15:07:54.921Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4ea25c04ac85f81ecda681ccbb789b06"],"technology":"open-webui","known_exclusions":[],"conditions_summary":"## Summary\nOn standard channels, the message update and delete handlers accepted any caller holding write access on the channel, without checking that the caller wrote the message. Write access is the same grant a member needs in order to post, so every ordinary participant in a shared channel could rewrite or permanently delete any other participant's messages. The group and direct message branch of the same handlers enforced authorship; the standard branch did not.\n\n## Preconditions\nChannels are disabled by default and must be enabled by an administrator (`ENABLE_CHANNELS`). The channel must be a standard channel; group and direct message channels are not affected. The attacker is any authenticated account with role `user` that holds write access on the channel, whether granted publicly, per user, or through a group. No ownership of the channel, channel manager role, or elevated role is required. Channel and message ids are returned by the listing endpoints the member can already call.\n\n## Impact\nAn ordinary member could replace the content of another member's message while the message stayed attributed to its original author, and could attach arbitrary `data` and `meta` payloads","public_affected_ranges":[">= 0.5.0, <= 0.10.2"]}],"null_published_at":"2026-11-08T19:53:44.018Z","source_updated_at":"2026-08-04T19:45:40.000Z","source_disclosed_at":"2026-08-04T19:45:39.000Z","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-00015271","kind":"vulnerability","title":"Open WebUI: Any member with write access to a standard channel can edit or delete other members' messages","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-mj5r-jf49-m3w7","CVE-2026-70481"],"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-4ea25c04ac85f81ecda681ccbb789b06"],"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":"2026-08-04T19:45:40.000Z","value":"5.4 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-4ea25c04ac85f81ecda681ccbb789b06"}],"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-4ea25c04ac85f81ecda681ccbb789b06","url":"https://github.com/advisories/GHSA-mj5r-jf49-m3w7","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-mj5r-jf49-m3w7","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T09:58:09.980Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4ea25c04ac85f81ecda681ccbb789b06"],"technology":"open-webui","known_exclusions":[],"conditions_summary":"## Summary\nOn standard channels, the message update and delete handlers accepted any caller holding write access on the channel, without checking that the caller wrote the message. Write access is the same grant a member needs in order to post, so every ordinary participant in a shared channel could rewrite or permanently delete any other participant's messages. The group and direct message branch of the same handlers enforced authorship; the standard branch did not.\n\n## Preconditions\nChannels are disabled by default and must be enabled by an administrator (`ENABLE_CHANNELS`). The channel must be a standard channel; group and direct message channels are not affected. The attacker is any authenticated account with role `user` that holds write access on the channel, whether granted publicly, per user, or through a group. No ownership of the channel, channel manager role, or elevated role is required. Channel and message ids are returned by the listing endpoints the member can already call.\n\n## Impact\nAn ordinary member could replace the content of another member's message while the message stayed attributed to its original author, and could attach arbitrary `data` and `meta` payloads","public_affected_ranges":[">= 0.5.0, <= 0.10.2"]}],"null_published_at":"2026-11-03T10:03:26.566Z","source_updated_at":"2026-08-04T19:45:40.000Z","source_disclosed_at":"2026-08-04T19:45:39.000Z","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"}