{"items":[{"id":"NVI-00010551","kind":"vulnerability","title":"SiYuan: A parser differential between the WebSocket keepalive exemption and the session quarantine allows unauthenticated access to the broadcast event stream","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-c8w8-3pqp-wr83","CVE-2026-73054"],"plain_summary":"GitHub lists this reviewed advisory for github.com/siyuan-note/siyuan/kernel. 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-98f70ce0377450fc9b9890faeda0c094"],"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":"2026-10-23T18:34:11.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-3834f19b641cda81fbe66a1db2e44c73"},{"kind":"CVSS","as_of":"2026-08-26T17:05:08.273Z","value":"7.5 HIGH (3.1)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-14bc8e8c0b3ba5e9713ed3b9092dfdcf"},{"kind":"CVSS","as_of":"2026-08-26T17:05:08.273Z","value":"8.7 HIGH (4.0)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-14bc8e8c0b3ba5e9713ed3b9092dfdcf"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.408%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.35082. Missing scores are unknown.","source_id":"sr-98f70ce0377450fc9b9890faeda0c094"}],"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-3834f19b641cda81fbe66a1db2e44c73","url":"https://github.com/advisories/GHSA-c8w8-3pqp-wr83","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-c8w8-3pqp-wr83","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:08.657Z"},{"id":"sr-14bc8e8c0b3ba5e9713ed3b9092dfdcf","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73054","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-73054","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-04T09:58:54.704Z"},{"id":"sr-98f70ce0377450fc9b9890faeda0c094","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-2026-73054","publisher":"FIRST EPSS","observed_at":"2026-10-31T23:13:27.699Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3834f19b641cda81fbe66a1db2e44c73"],"technology":"github.com/siyuan-note/siyuan/kernel","known_exclusions":[],"conditions_summary":"### Summary\n\nTwo checks on the same WebSocket request URI parse it differently. The authentication exemption for keepalive sessions matches raw substrings, while the quarantine introduced to contain those sessions reads a parsed query parameter. Because Go's `url.Values.Get` returns only the first value for a repeated key, a single URI can satisfy the exemption and still resolve to a non-auth session identity.\n\nThe result is that an unauthenticated remote caller connects to the kernel WebSocket with a valid access auth code configured, is placed in the general broadcast pool rather than the quarantined pool, and receives the live event stream.\n\n### Details\n\n**The exemption matches substrings.** `kernel/server/serve.go:1222` on the development branch, `:1074` on master:\n\n```go\nauthOk = strings.Contains(s.Request.RequestURI, \"/ws?app=siyuan\") &&\n         strings.Contains(s.Request.RequestURI, \"&id=auth&type=auth\")\n```\n\nNeither operand is parsed. Any URI containing both literals is exempted, regardless of what the query actually resolves to.\n\n**The quarantine parses.** Commit `1e370e373` added the containment for exempted sessions at `kernel/util/websocket.go:171`:\n\n```go\nid = session","public_affected_ranges":["< 0.0.0-20260731131820-67bc300b6ea6"]}],"null_published_at":"2026-11-05T03:53:06.258Z","source_updated_at":"2026-10-23T18:34:11.000Z","source_disclosed_at":"2026-10-23T18:34:09.000Z","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":"2026-10-31T22:07:08.657Z"},{"id":"NVI-00010551","kind":"vulnerability","title":"SiYuan: A parser differential between the WebSocket keepalive exemption and the session quarantine allows unauthenticated access to the broadcast event stream","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-c8w8-3pqp-wr83","CVE-2026-73054"],"plain_summary":"GitHub lists this reviewed advisory for github.com/siyuan-note/siyuan/kernel. 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-14bc8e8c0b3ba5e9713ed3b9092dfdcf"],"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":"2026-10-23T18:34:11.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-3834f19b641cda81fbe66a1db2e44c73"},{"kind":"CVSS","as_of":"2026-08-26T17:05:08.273Z","value":"7.5 HIGH (3.1)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-14bc8e8c0b3ba5e9713ed3b9092dfdcf"},{"kind":"CVSS","as_of":"2026-08-26T17:05:08.273Z","value":"8.7 HIGH (4.0)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-14bc8e8c0b3ba5e9713ed3b9092dfdcf"}],"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-3834f19b641cda81fbe66a1db2e44c73","url":"https://github.com/advisories/GHSA-c8w8-3pqp-wr83","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-c8w8-3pqp-wr83","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:08.657Z"},{"id":"sr-14bc8e8c0b3ba5e9713ed3b9092dfdcf","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73054","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-73054","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-04T09:58:54.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3834f19b641cda81fbe66a1db2e44c73"],"technology":"github.com/siyuan-note/siyuan/kernel","known_exclusions":[],"conditions_summary":"### Summary\n\nTwo checks on the same WebSocket request URI parse it differently. The authentication exemption for keepalive sessions matches raw substrings, while the quarantine introduced to contain those sessions reads a parsed query parameter. Because Go's `url.Values.Get` returns only the first value for a repeated key, a single URI can satisfy the exemption and still resolve to a non-auth session identity.\n\nThe result is that an unauthenticated remote caller connects to the kernel WebSocket with a valid access auth code configured, is placed in the general broadcast pool rather than the quarantined pool, and receives the live event stream.\n\n### Details\n\n**The exemption matches substrings.** `kernel/server/serve.go:1222` on the development branch, `:1074` on master:\n\n```go\nauthOk = strings.Contains(s.Request.RequestURI, \"/ws?app=siyuan\") &&\n         strings.Contains(s.Request.RequestURI, \"&id=auth&type=auth\")\n```\n\nNeither operand is parsed. Any URI containing both literals is exempted, regardless of what the query actually resolves to.\n\n**The quarantine parses.** Commit `1e370e373` added the containment for exempted sessions at `kernel/util/websocket.go:171`:\n\n```go\nid = session","public_affected_ranges":["< 0.0.0-20260731131820-67bc300b6ea6"]}],"null_published_at":"2026-11-04T10:04:35.912Z","source_updated_at":"2026-10-23T18:34:11.000Z","source_disclosed_at":"2026-10-23T18:34:09.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T22:07:08.657Z"},{"id":"NVI-00010551","kind":"vulnerability","title":"SiYuan: A parser differential between the WebSocket keepalive exemption and the session quarantine allows unauthenticated access to the broadcast event stream","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-c8w8-3pqp-wr83","CVE-2026-73054"],"plain_summary":"GitHub lists this reviewed advisory for github.com/siyuan-note/siyuan/kernel. 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-3834f19b641cda81fbe66a1db2e44c73"],"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":"2026-10-23T18:34:11.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-3834f19b641cda81fbe66a1db2e44c73"}],"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-3834f19b641cda81fbe66a1db2e44c73","url":"https://github.com/advisories/GHSA-c8w8-3pqp-wr83","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-c8w8-3pqp-wr83","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:08.657Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3834f19b641cda81fbe66a1db2e44c73"],"technology":"github.com/siyuan-note/siyuan/kernel","known_exclusions":[],"conditions_summary":"### Summary\n\nTwo checks on the same WebSocket request URI parse it differently. The authentication exemption for keepalive sessions matches raw substrings, while the quarantine introduced to contain those sessions reads a parsed query parameter. Because Go's `url.Values.Get` returns only the first value for a repeated key, a single URI can satisfy the exemption and still resolve to a non-auth session identity.\n\nThe result is that an unauthenticated remote caller connects to the kernel WebSocket with a valid access auth code configured, is placed in the general broadcast pool rather than the quarantined pool, and receives the live event stream.\n\n### Details\n\n**The exemption matches substrings.** `kernel/server/serve.go:1222` on the development branch, `:1074` on master:\n\n```go\nauthOk = strings.Contains(s.Request.RequestURI, \"/ws?app=siyuan\") &&\n         strings.Contains(s.Request.RequestURI, \"&id=auth&type=auth\")\n```\n\nNeither operand is parsed. Any URI containing both literals is exempted, regardless of what the query actually resolves to.\n\n**The quarantine parses.** Commit `1e370e373` added the containment for exempted sessions at `kernel/util/websocket.go:171`:\n\n```go\nid = session","public_affected_ranges":["< 0.0.0-20260731131820-67bc300b6ea6"]}],"null_published_at":"2026-10-31T22:27:09.621Z","source_updated_at":"2026-10-23T18:34:11.000Z","source_disclosed_at":"2026-10-23T18:34:09.000Z","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":"2026-10-31T22:07:08.657Z"}],"next_cursor":null,"snapshot_revision":"42594"}