{"items":[{"id":"NVI-00013164","kind":"vulnerability","title":"russh: Client-side channel-scoped Handler callbacks fire for channel IDs the client never opened","revision":3,"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-47hw-gvq5-r2gm","CVE-2026-102823"],"plain_summary":"GitHub lists this reviewed advisory for russh. 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-2ade234578c8159e51299b9dc715ee22"],"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":"2026-09-30T23:27:18.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-7e74120de89105f08a62f02de8fb9ec4"},{"kind":"CVSS","as_of":"2026-10-02T13:17:25.650Z","value":"7.5 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-60cb1dfe9fb0ae10561f983da5de60af"},{"kind":"EPSS","as_of":"2026-11-02T12:00:30.000Z","value":"0.317%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.24648. Missing scores are unknown.","source_id":"sr-2ade234578c8159e51299b9dc715ee22"}],"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-7e74120de89105f08a62f02de8fb9ec4","url":"https://github.com/advisories/GHSA-47hw-gvq5-r2gm","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-47hw-gvq5-r2gm","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"},{"id":"sr-60cb1dfe9fb0ae10561f983da5de60af","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102823","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-102823","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T09:58:04.487Z"},{"id":"sr-2ade234578c8159e51299b9dc715ee22","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-2026-102823","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:15:58.837Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7e74120de89105f08a62f02de8fb9ec4"],"technology":"russh","known_exclusions":[],"conditions_summary":"### Summary\nCVE-2026-68930 was fixed by adding `Session::is_established_channel()` in `russh/src/server/encrypted.rs`, which gates every channel-scoped SERVER-side message (CHANNEL_REQUEST, CHANNEL_DATA, CHANNEL_EOF, CHANNEL_CLOSE, CHANNEL_WINDOW_ADJUST, CHANNEL_EXTENDED_DATA) on `enc.channels.get(&channel).is_some_and(|c| c.confirmed)` before invoking any `Handler` callback. The identical validation was never added to the CLIENT side (`russh/src/client/encrypted.rs`), which processes channel-scoped messages sent by the SSH SERVER once the client has authenticated.\n\n### Details\nIn `client_read_authenticated` (`russh/src/client/encrypted.rs`, ~lines 431-757), for CHANNEL_DATA, CHANNEL_EXTENDED_DATA, CHANNEL_EOF, CHANNEL_CLOSE, CHANNEL_OPEN_FAILURE, CHANNEL_SUCCESS, CHANNEL_FAILURE, and the CHANNEL_REQUEST sub-types exit-status/exit-signal/xon-xoff, the code only optionally forwards the event to the internal per-channel mpsc sender via `if let Some(chan) = self.channels.get(&channel_num) { ... }` (a no-op if the channel is unknown), but then **unconditionally** calls the corresponding public `Handler` trait method (`client.data(...)`, `client.exit_status(...)`, `client.channel_close(","public_affected_ranges":["<= 0.63.0"]}],"null_published_at":"2026-11-08T19:53:38.912Z","source_updated_at":"2026-09-30T23:27:18.000Z","source_disclosed_at":"2026-09-30T23:27:17.000Z","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":"2026-11-01T07:22:52.960Z"},{"id":"NVI-00013164","kind":"vulnerability","title":"russh: Client-side channel-scoped Handler callbacks fire for channel IDs the client never opened","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-47hw-gvq5-r2gm","CVE-2026-102823"],"plain_summary":"GitHub lists this reviewed advisory for russh. 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-60cb1dfe9fb0ae10561f983da5de60af"],"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":"2026-09-30T23:27:18.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-7e74120de89105f08a62f02de8fb9ec4"},{"kind":"CVSS","as_of":"2026-10-02T13:17:25.650Z","value":"7.5 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-60cb1dfe9fb0ae10561f983da5de60af"}],"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-7e74120de89105f08a62f02de8fb9ec4","url":"https://github.com/advisories/GHSA-47hw-gvq5-r2gm","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-47hw-gvq5-r2gm","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"},{"id":"sr-60cb1dfe9fb0ae10561f983da5de60af","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102823","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-102823","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T09:58:04.487Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7e74120de89105f08a62f02de8fb9ec4"],"technology":"russh","known_exclusions":[],"conditions_summary":"### Summary\nCVE-2026-68930 was fixed by adding `Session::is_established_channel()` in `russh/src/server/encrypted.rs`, which gates every channel-scoped SERVER-side message (CHANNEL_REQUEST, CHANNEL_DATA, CHANNEL_EOF, CHANNEL_CLOSE, CHANNEL_WINDOW_ADJUST, CHANNEL_EXTENDED_DATA) on `enc.channels.get(&channel).is_some_and(|c| c.confirmed)` before invoking any `Handler` callback. The identical validation was never added to the CLIENT side (`russh/src/client/encrypted.rs`), which processes channel-scoped messages sent by the SSH SERVER once the client has authenticated.\n\n### Details\nIn `client_read_authenticated` (`russh/src/client/encrypted.rs`, ~lines 431-757), for CHANNEL_DATA, CHANNEL_EXTENDED_DATA, CHANNEL_EOF, CHANNEL_CLOSE, CHANNEL_OPEN_FAILURE, CHANNEL_SUCCESS, CHANNEL_FAILURE, and the CHANNEL_REQUEST sub-types exit-status/exit-signal/xon-xoff, the code only optionally forwards the event to the internal per-channel mpsc sender via `if let Some(chan) = self.channels.get(&channel_num) { ... }` (a no-op if the channel is unknown), but then **unconditionally** calls the corresponding public `Handler` trait method (`client.data(...)`, `client.exit_status(...)`, `client.channel_close(","public_affected_ranges":["<= 0.63.0"]}],"null_published_at":"2026-11-07T07:07:42.473Z","source_updated_at":"2026-09-30T23:27:18.000Z","source_disclosed_at":"2026-09-30T23:27:17.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-01T07:22:52.960Z"},{"id":"NVI-00013164","kind":"vulnerability","title":"russh: Client-side channel-scoped Handler callbacks fire for channel IDs the client never opened","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-47hw-gvq5-r2gm","CVE-2026-102823"],"plain_summary":"GitHub lists this reviewed advisory for russh. 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-7e74120de89105f08a62f02de8fb9ec4"],"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":"2026-09-30T23:27:18.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-7e74120de89105f08a62f02de8fb9ec4"}],"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-7e74120de89105f08a62f02de8fb9ec4","url":"https://github.com/advisories/GHSA-47hw-gvq5-r2gm","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-47hw-gvq5-r2gm","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7e74120de89105f08a62f02de8fb9ec4"],"technology":"russh","known_exclusions":[],"conditions_summary":"### Summary\nCVE-2026-68930 was fixed by adding `Session::is_established_channel()` in `russh/src/server/encrypted.rs`, which gates every channel-scoped SERVER-side message (CHANNEL_REQUEST, CHANNEL_DATA, CHANNEL_EOF, CHANNEL_CLOSE, CHANNEL_WINDOW_ADJUST, CHANNEL_EXTENDED_DATA) on `enc.channels.get(&channel).is_some_and(|c| c.confirmed)` before invoking any `Handler` callback. The identical validation was never added to the CLIENT side (`russh/src/client/encrypted.rs`), which processes channel-scoped messages sent by the SSH SERVER once the client has authenticated.\n\n### Details\nIn `client_read_authenticated` (`russh/src/client/encrypted.rs`, ~lines 431-757), for CHANNEL_DATA, CHANNEL_EXTENDED_DATA, CHANNEL_EOF, CHANNEL_CLOSE, CHANNEL_OPEN_FAILURE, CHANNEL_SUCCESS, CHANNEL_FAILURE, and the CHANNEL_REQUEST sub-types exit-status/exit-signal/xon-xoff, the code only optionally forwards the event to the internal per-channel mpsc sender via `if let Some(chan) = self.channels.get(&channel_num) { ... }` (a no-op if the channel is unknown), but then **unconditionally** calls the corresponding public `Handler` trait method (`client.data(...)`, `client.exit_status(...)`, `client.channel_close(","public_affected_ranges":["<= 0.63.0"]}],"null_published_at":"2026-11-01T07:29:12.927Z","source_updated_at":"2026-09-30T23:27:18.000Z","source_disclosed_at":"2026-09-30T23:27:17.000Z","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":"2026-11-01T07:22:52.960Z"}],"next_cursor":null,"snapshot_revision":"42594"}