{"items":[{"id":"NVI-00008252","kind":"vulnerability","title":"Flarum notifications can leak restricted content","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-8gcg-vwmw-rxj4","CVE-2023-22488"],"plain_summary":"OSV carries this publisher advisory for flarum/core. 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 1.6.3 for flarum/core. Confirm the publisher’s latest guidance.","source_ids":["sr-fbfd60ea286815dbfac811866c53206c"],"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},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-6e9a22668a41d6754395b8468eb06c4f"],"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":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.416%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.35926. Missing scores are unknown.","source_id":"sr-6e9a22668a41d6754395b8468eb06c4f"}],"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-fbfd60ea286815dbfac811866c53206c","url":"https://github.com/advisories/GHSA-8gcg-vwmw-rxj4","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-8gcg-vwmw-rxj4","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.669Z"},{"id":"sr-6e9a22668a41d6754395b8468eb06c4f","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-2023-22488","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:03.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-fbfd60ea286815dbfac811866c53206c"],"technology":"flarum/core","known_exclusions":[],"conditions_summary":"Using the notifications feature, one can read restricted/private content and bypass access checks that would be in place for such content.\n\nThe notification-sending component does not check that the subject of the notification can be seen by the receiver, and proceeds to send notifications through their different channels. The alerts do not leak data despite this as they are listed based on a visibility check, however, emails are still sent out.\n\nThis means that, for extensions which restrict access to posts, any actor can bypass the restriction by subscribing to the discussion if the *Subscriptions* extension is enabled.\n\n### Impact\nThe attack allows the leaking of some posts in the forum database, including posts awaiting approval, posts in tags the user has no access to if they could subscribe to a discussion before it becomes private, and posts restricted by third-party extensions.\n\nOther leaks could also happen for different notification subjects if some features allowed to receive specific types of notifications for restricted content.\n\nAll Flarum versions prior to v1.6.3 are affected.\n\n### Patches\nThe vulnerability has ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.6.3"]}],"null_published_at":"2026-11-01T19:14:01.579Z","source_updated_at":"2023-11-08T04:11:36.481Z","source_disclosed_at":"2023-01-10T22:27:13.000Z","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":"2026-10-31T21:42:10.669Z"},{"id":"NVI-00008252","kind":"vulnerability","title":"Flarum notifications can leak restricted content","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-8gcg-vwmw-rxj4","CVE-2023-22488"],"plain_summary":"OSV carries this publisher advisory for flarum/core. 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 1.6.3 for flarum/core. Confirm the publisher’s latest guidance.","source_ids":["sr-fbfd60ea286815dbfac811866c53206c"],"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-fbfd60ea286815dbfac811866c53206c","url":"https://github.com/advisories/GHSA-8gcg-vwmw-rxj4","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-8gcg-vwmw-rxj4","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.669Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-fbfd60ea286815dbfac811866c53206c"],"technology":"flarum/core","known_exclusions":[],"conditions_summary":"Using the notifications feature, one can read restricted/private content and bypass access checks that would be in place for such content.\n\nThe notification-sending component does not check that the subject of the notification can be seen by the receiver, and proceeds to send notifications through their different channels. The alerts do not leak data despite this as they are listed based on a visibility check, however, emails are still sent out.\n\nThis means that, for extensions which restrict access to posts, any actor can bypass the restriction by subscribing to the discussion if the *Subscriptions* extension is enabled.\n\n### Impact\nThe attack allows the leaking of some posts in the forum database, including posts awaiting approval, posts in tags the user has no access to if they could subscribe to a discussion before it becomes private, and posts restricted by third-party extensions.\n\nOther leaks could also happen for different notification subjects if some features allowed to receive specific types of notifications for restricted content.\n\nAll Flarum versions prior to v1.6.3 are affected.\n\n### Patches\nThe vulnerability has ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.6.3"]}],"null_published_at":"2026-10-31T22:13:22.836Z","source_updated_at":"2023-11-08T04:11:36.481Z","source_disclosed_at":"2023-01-10T22:27:13.000Z","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":"2026-10-31T21:42:10.669Z"}],"next_cursor":null,"snapshot_revision":"42594"}