{"items":[{"id":"NVI-00012182","kind":"vulnerability","title":"MessagePack: Nested arrays can blow past buffer length limits","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-qhrr-8q5h-9q3h","CVE-2026-92707"],"plain_summary":"GitHub lists this reviewed advisory for MessagePack, MessagePack. 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-1137527168e8167edd39cc95070ec5ef"],"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":"2026-10-15T18:35:48.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-bf4757359aa4e45d3ac5b9aecdc79321"},{"kind":"CVSS","as_of":"2026-10-16T16:00:33.533Z","value":"5.3 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-0915c8f1b61c242f5400308d24f1f9a4"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.678%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.52431. Missing scores are unknown.","source_id":"sr-1137527168e8167edd39cc95070ec5ef"}],"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-bf4757359aa4e45d3ac5b9aecdc79321","url":"https://github.com/advisories/GHSA-qhrr-8q5h-9q3h","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-qhrr-8q5h-9q3h","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:14:22.124Z"},{"id":"sr-0915c8f1b61c242f5400308d24f1f9a4","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92707","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-92707","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-04T09:59:50.242Z"},{"id":"sr-1137527168e8167edd39cc95070ec5ef","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-2026-92707","publisher":"FIRST EPSS","observed_at":"2026-11-04T23:33:33.080Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-bf4757359aa4e45d3ac5b9aecdc79321"],"technology":"MessagePack","known_exclusions":[],"conditions_summary":"### Impact\n\nMessagePack-CSharp is vulnerable to denial of service through excessive memory allocation when deserializing attacker-controlled data into `System.Object`.\n\nWhen `PrimitiveObjectFormatter` encounters an array, it allocates an `object[]` using the declared array length **before** enforcing the configured maximum object-graph depth. A specially crafted payload containing deeply nested arrays can therefore keep many large arrays live simultaneously before deserialization is rejected for exceeding the depth limit.\n\nBecause the array-header validation uses the total unread byte count as evidence that the declared elements may be present, nested array headers can reuse the same trailing bytes for this validation. This permits a relatively small payload to cause disproportionately large managed-heap allocations. The reported example uses an approximately 31.5 KiB payload to allocate roughly 114.7 MiB of reference storage on x64—an amplification factor of approximately 3,800—before the depth exception is raised. Repeated requests may cause severe memory pressure, excessive garbage collection, process termination, or loss of service availability.\n\nApplications are affected when ","public_affected_ranges":["< 2.5.303"]},{"certainty":"source_listed","source_ids":["sr-bf4757359aa4e45d3ac5b9aecdc79321"],"technology":"MessagePack","known_exclusions":[],"conditions_summary":"### Impact\n\nMessagePack-CSharp is vulnerable to denial of service through excessive memory allocation when deserializing attacker-controlled data into `System.Object`.\n\nWhen `PrimitiveObjectFormatter` encounters an array, it allocates an `object[]` using the declared array length **before** enforcing the configured maximum object-graph depth. A specially crafted payload containing deeply nested arrays can therefore keep many large arrays live simultaneously before deserialization is rejected for exceeding the depth limit.\n\nBecause the array-header validation uses the total unread byte count as evidence that the declared elements may be present, nested array headers can reuse the same trailing bytes for this validation. This permits a relatively small payload to cause disproportionately large managed-heap allocations. The reported example uses an approximately 31.5 KiB payload to allocate roughly 114.7 MiB of reference storage on x64—an amplification factor of approximately 3,800—before the depth exception is raised. Repeated requests may cause severe memory pressure, excessive garbage collection, process termination, or loss of service availability.\n\nApplications are affected when ","public_affected_ranges":[">= 3.0.0, < 3.1.9"]}],"null_published_at":"2026-11-07T14:02:01.402Z","source_updated_at":"2026-10-15T18:35:48.000Z","source_disclosed_at":"2026-10-15T18:35:46.000Z","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":"2026-10-31T23:14:22.124Z"},{"id":"NVI-00012182","kind":"vulnerability","title":"MessagePack: Nested arrays can blow past buffer length limits","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-qhrr-8q5h-9q3h","CVE-2026-92707"],"plain_summary":"GitHub lists this reviewed advisory for MessagePack, MessagePack. 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-0915c8f1b61c242f5400308d24f1f9a4"],"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":"2026-10-15T18:35:48.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-bf4757359aa4e45d3ac5b9aecdc79321"},{"kind":"CVSS","as_of":"2026-10-16T16:00:33.533Z","value":"5.3 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-0915c8f1b61c242f5400308d24f1f9a4"}],"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-bf4757359aa4e45d3ac5b9aecdc79321","url":"https://github.com/advisories/GHSA-qhrr-8q5h-9q3h","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-qhrr-8q5h-9q3h","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:14:22.124Z"},{"id":"sr-0915c8f1b61c242f5400308d24f1f9a4","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92707","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-92707","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-04T09:59:50.242Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-bf4757359aa4e45d3ac5b9aecdc79321"],"technology":"MessagePack","known_exclusions":[],"conditions_summary":"### Impact\n\nMessagePack-CSharp is vulnerable to denial of service through excessive memory allocation when deserializing attacker-controlled data into `System.Object`.\n\nWhen `PrimitiveObjectFormatter` encounters an array, it allocates an `object[]` using the declared array length **before** enforcing the configured maximum object-graph depth. A specially crafted payload containing deeply nested arrays can therefore keep many large arrays live simultaneously before deserialization is rejected for exceeding the depth limit.\n\nBecause the array-header validation uses the total unread byte count as evidence that the declared elements may be present, nested array headers can reuse the same trailing bytes for this validation. This permits a relatively small payload to cause disproportionately large managed-heap allocations. The reported example uses an approximately 31.5 KiB payload to allocate roughly 114.7 MiB of reference storage on x64—an amplification factor of approximately 3,800—before the depth exception is raised. Repeated requests may cause severe memory pressure, excessive garbage collection, process termination, or loss of service availability.\n\nApplications are affected when ","public_affected_ranges":["< 2.5.303"]},{"certainty":"source_listed","source_ids":["sr-bf4757359aa4e45d3ac5b9aecdc79321"],"technology":"MessagePack","known_exclusions":[],"conditions_summary":"### Impact\n\nMessagePack-CSharp is vulnerable to denial of service through excessive memory allocation when deserializing attacker-controlled data into `System.Object`.\n\nWhen `PrimitiveObjectFormatter` encounters an array, it allocates an `object[]` using the declared array length **before** enforcing the configured maximum object-graph depth. A specially crafted payload containing deeply nested arrays can therefore keep many large arrays live simultaneously before deserialization is rejected for exceeding the depth limit.\n\nBecause the array-header validation uses the total unread byte count as evidence that the declared elements may be present, nested array headers can reuse the same trailing bytes for this validation. This permits a relatively small payload to cause disproportionately large managed-heap allocations. The reported example uses an approximately 31.5 KiB payload to allocate roughly 114.7 MiB of reference storage on x64—an amplification factor of approximately 3,800—before the depth exception is raised. Repeated requests may cause severe memory pressure, excessive garbage collection, process termination, or loss of service availability.\n\nApplications are affected when ","public_affected_ranges":[">= 3.0.0, < 3.1.9"]}],"null_published_at":"2026-11-04T10:04:35.900Z","source_updated_at":"2026-10-15T18:35:48.000Z","source_disclosed_at":"2026-10-15T18:35:46.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T23:14:22.124Z"},{"id":"NVI-00012182","kind":"vulnerability","title":"MessagePack: Nested arrays can blow past buffer length limits","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-qhrr-8q5h-9q3h","CVE-2026-92707"],"plain_summary":"GitHub lists this reviewed advisory for MessagePack, MessagePack. 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-bf4757359aa4e45d3ac5b9aecdc79321"],"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":"2026-10-15T18:35:48.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-bf4757359aa4e45d3ac5b9aecdc79321"}],"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-bf4757359aa4e45d3ac5b9aecdc79321","url":"https://github.com/advisories/GHSA-qhrr-8q5h-9q3h","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-qhrr-8q5h-9q3h","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:14:22.124Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-bf4757359aa4e45d3ac5b9aecdc79321"],"technology":"MessagePack","known_exclusions":[],"conditions_summary":"### Impact\n\nMessagePack-CSharp is vulnerable to denial of service through excessive memory allocation when deserializing attacker-controlled data into `System.Object`.\n\nWhen `PrimitiveObjectFormatter` encounters an array, it allocates an `object[]` using the declared array length **before** enforcing the configured maximum object-graph depth. A specially crafted payload containing deeply nested arrays can therefore keep many large arrays live simultaneously before deserialization is rejected for exceeding the depth limit.\n\nBecause the array-header validation uses the total unread byte count as evidence that the declared elements may be present, nested array headers can reuse the same trailing bytes for this validation. This permits a relatively small payload to cause disproportionately large managed-heap allocations. The reported example uses an approximately 31.5 KiB payload to allocate roughly 114.7 MiB of reference storage on x64—an amplification factor of approximately 3,800—before the depth exception is raised. Repeated requests may cause severe memory pressure, excessive garbage collection, process termination, or loss of service availability.\n\nApplications are affected when ","public_affected_ranges":["< 2.5.303"]},{"certainty":"source_listed","source_ids":["sr-bf4757359aa4e45d3ac5b9aecdc79321"],"technology":"MessagePack","known_exclusions":[],"conditions_summary":"### Impact\n\nMessagePack-CSharp is vulnerable to denial of service through excessive memory allocation when deserializing attacker-controlled data into `System.Object`.\n\nWhen `PrimitiveObjectFormatter` encounters an array, it allocates an `object[]` using the declared array length **before** enforcing the configured maximum object-graph depth. A specially crafted payload containing deeply nested arrays can therefore keep many large arrays live simultaneously before deserialization is rejected for exceeding the depth limit.\n\nBecause the array-header validation uses the total unread byte count as evidence that the declared elements may be present, nested array headers can reuse the same trailing bytes for this validation. This permits a relatively small payload to cause disproportionately large managed-heap allocations. The reported example uses an approximately 31.5 KiB payload to allocate roughly 114.7 MiB of reference storage on x64—an amplification factor of approximately 3,800—before the depth exception is raised. Repeated requests may cause severe memory pressure, excessive garbage collection, process termination, or loss of service availability.\n\nApplications are affected when ","public_affected_ranges":[">= 3.0.0, < 3.1.9"]}],"null_published_at":"2026-11-01T01:45:38.494Z","source_updated_at":"2026-10-15T18:35:48.000Z","source_disclosed_at":"2026-10-15T18:35:46.000Z","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":"2026-10-31T23:14:22.124Z"}],"next_cursor":null,"snapshot_revision":"42594"}