{"items":[{"id":"NVI-00005086","kind":"vulnerability","title":"PocketMine-MP: LogDoS by large complex unknown property logging in clientData in LoginPacket","revision":4,"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-h6rj-3m53-887h","CVE-2026-86201"],"plain_summary":"OSV carries this publisher advisory for pocketmine/pocketmine-mp. 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 5.41.1 for pocketmine/pocketmine-mp. Confirm the publisher’s latest guidance.","source_ids":["sr-80c3da2346bf172848bfcf1e43bd1fe0"],"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-16d407bafbfd03dfb5eabeada7835998"],"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":"2026-10-08T16:17:56.250Z","value":"7.5 HIGH (3.1)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-ad309a2bed601e14df317f14ffda8e14"},{"kind":"CVSS","as_of":"2026-10-08T16:17:56.250Z","value":"8.7 HIGH (4.0)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-ad309a2bed601e14df317f14ffda8e14"},{"kind":"EPSS","as_of":"2026-11-02T12:00:30.000Z","value":"0.609%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.49161. Missing scores are unknown.","source_id":"sr-16d407bafbfd03dfb5eabeada7835998"}],"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-80c3da2346bf172848bfcf1e43bd1fe0","url":"https://github.com/advisories/GHSA-h6rj-3m53-887h","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-h6rj-3m53-887h","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.426Z"},{"id":"sr-ad309a2bed601e14df317f14ffda8e14","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86201","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-86201","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:25:08.112Z"},{"id":"sr-16d407bafbfd03dfb5eabeada7835998","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-2026-86201","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:17:01.143Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-80c3da2346bf172848bfcf1e43bd1fe0"],"technology":"pocketmine/pocketmine-mp","known_exclusions":[],"conditions_summary":"### Impact\n\nAttackers can put large and/or complex structures as a value to an unknown property in the clientData JWT body in the Minecraft `LoginPacket`, causing the server to generate very long log messages.\nAdditionally, the property name is logged without any length limitations or sanitization, which can also be abused for LogDoS.\n\nThis may be used to spam the log/console, waste CPU time serializing the offending structure, and potentially to crash the server entirely.\n\nThis happens because the JsonMapper instance used to process the JWT body is configured to warn on unexpected properties instead of rejecting them outright. While this behaviour increases flexibility for random changes introduced by Microsoft, it also creates vulnerabilities if not handled carefully.\n\nThis vulnerability affects PocketMine-MP servers exposed to a public network where unknown actors may have access.\n\n### PoC\n1. Connect to the server using a custom client.\n\n2. Send a Minecraft `LoginPacket` containing an unexpected JSON property (e.g., invalid_key) within the ClientData.\n\n3. Set the value of invalid_key to a highly recursive or massive object structure (e.g., an array containing millions of element","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 5.41.1"]}],"null_published_at":"2026-11-06T15:18:17.677Z","source_updated_at":"2026-09-10T03:56:12.193Z","source_disclosed_at":"2026-04-06T22:54:03.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:20.426Z"},{"id":"NVI-00005086","kind":"vulnerability","title":"PocketMine-MP: LogDoS by large complex unknown property logging in clientData in LoginPacket","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-h6rj-3m53-887h","CVE-2026-86201"],"plain_summary":"OSV carries this publisher advisory for pocketmine/pocketmine-mp. 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 5.41.1 for pocketmine/pocketmine-mp. Confirm the publisher’s latest guidance.","source_ids":["sr-80c3da2346bf172848bfcf1e43bd1fe0"],"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-16d407bafbfd03dfb5eabeada7835998"],"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":"2026-11-02T12:00:30.000Z","value":"0.609%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.49161. Missing scores are unknown.","source_id":"sr-16d407bafbfd03dfb5eabeada7835998"}],"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-80c3da2346bf172848bfcf1e43bd1fe0","url":"https://github.com/advisories/GHSA-h6rj-3m53-887h","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-h6rj-3m53-887h","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.426Z"},{"id":"sr-16d407bafbfd03dfb5eabeada7835998","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-2026-86201","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:17:01.143Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-80c3da2346bf172848bfcf1e43bd1fe0"],"technology":"pocketmine/pocketmine-mp","known_exclusions":[],"conditions_summary":"### Impact\n\nAttackers can put large and/or complex structures as a value to an unknown property in the clientData JWT body in the Minecraft `LoginPacket`, causing the server to generate very long log messages.\nAdditionally, the property name is logged without any length limitations or sanitization, which can also be abused for LogDoS.\n\nThis may be used to spam the log/console, waste CPU time serializing the offending structure, and potentially to crash the server entirely.\n\nThis happens because the JsonMapper instance used to process the JWT body is configured to warn on unexpected properties instead of rejecting them outright. While this behaviour increases flexibility for random changes introduced by Microsoft, it also creates vulnerabilities if not handled carefully.\n\nThis vulnerability affects PocketMine-MP servers exposed to a public network where unknown actors may have access.\n\n### PoC\n1. Connect to the server using a custom client.\n\n2. Send a Minecraft `LoginPacket` containing an unexpected JSON property (e.g., invalid_key) within the ClientData.\n\n3. Set the value of invalid_key to a highly recursive or massive object structure (e.g., an array containing millions of element","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 5.41.1"]}],"null_published_at":"2026-11-06T00:30:00.622Z","source_updated_at":"2026-09-10T03:56:12.193Z","source_disclosed_at":"2026-04-06T22:54:03.000Z","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":"2026-10-31T21:42:20.426Z"},{"id":"NVI-00005086","kind":"vulnerability","title":"PocketMine-MP: LogDoS by large complex unknown property logging in clientData in LoginPacket","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-h6rj-3m53-887h","CVE-2026-86201"],"plain_summary":"OSV carries this publisher advisory for pocketmine/pocketmine-mp. 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 5.41.1 for pocketmine/pocketmine-mp. Confirm the publisher’s latest guidance.","source_ids":["sr-80c3da2346bf172848bfcf1e43bd1fe0"],"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-0efc4e4e7e6849e443b3ea94bb086f66"],"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":"2026-11-01T12:00:16.000Z","value":"0.609%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.49172. Missing scores are unknown.","source_id":"sr-0efc4e4e7e6849e443b3ea94bb086f66"}],"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-80c3da2346bf172848bfcf1e43bd1fe0","url":"https://github.com/advisories/GHSA-h6rj-3m53-887h","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-h6rj-3m53-887h","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.426Z"},{"id":"sr-0efc4e4e7e6849e443b3ea94bb086f66","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-2026-86201","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:28:32.288Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-80c3da2346bf172848bfcf1e43bd1fe0"],"technology":"pocketmine/pocketmine-mp","known_exclusions":[],"conditions_summary":"### Impact\n\nAttackers can put large and/or complex structures as a value to an unknown property in the clientData JWT body in the Minecraft `LoginPacket`, causing the server to generate very long log messages.\nAdditionally, the property name is logged without any length limitations or sanitization, which can also be abused for LogDoS.\n\nThis may be used to spam the log/console, waste CPU time serializing the offending structure, and potentially to crash the server entirely.\n\nThis happens because the JsonMapper instance used to process the JWT body is configured to warn on unexpected properties instead of rejecting them outright. While this behaviour increases flexibility for random changes introduced by Microsoft, it also creates vulnerabilities if not handled carefully.\n\nThis vulnerability affects PocketMine-MP servers exposed to a public network where unknown actors may have access.\n\n### PoC\n1. Connect to the server using a custom client.\n\n2. Send a Minecraft `LoginPacket` containing an unexpected JSON property (e.g., invalid_key) within the ClientData.\n\n3. Set the value of invalid_key to a highly recursive or massive object structure (e.g., an array containing millions of element","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 5.41.1"]}],"null_published_at":"2026-11-03T17:49:18.461Z","source_updated_at":"2026-09-10T03:56:12.193Z","source_disclosed_at":"2026-04-06T22:54:03.000Z","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":"2026-10-31T21:42:20.426Z"},{"id":"NVI-00005086","kind":"vulnerability","title":"PocketMine-MP: LogDoS by large complex unknown property logging in clientData in LoginPacket","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-h6rj-3m53-887h","CVE-2026-86201"],"plain_summary":"OSV carries this publisher advisory for pocketmine/pocketmine-mp. 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 5.41.1 for pocketmine/pocketmine-mp. Confirm the publisher’s latest guidance.","source_ids":["sr-80c3da2346bf172848bfcf1e43bd1fe0"],"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-80c3da2346bf172848bfcf1e43bd1fe0","url":"https://github.com/advisories/GHSA-h6rj-3m53-887h","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-h6rj-3m53-887h","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.426Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-80c3da2346bf172848bfcf1e43bd1fe0"],"technology":"pocketmine/pocketmine-mp","known_exclusions":[],"conditions_summary":"### Impact\n\nAttackers can put large and/or complex structures as a value to an unknown property in the clientData JWT body in the Minecraft `LoginPacket`, causing the server to generate very long log messages.\nAdditionally, the property name is logged without any length limitations or sanitization, which can also be abused for LogDoS.\n\nThis may be used to spam the log/console, waste CPU time serializing the offending structure, and potentially to crash the server entirely.\n\nThis happens because the JsonMapper instance used to process the JWT body is configured to warn on unexpected properties instead of rejecting them outright. While this behaviour increases flexibility for random changes introduced by Microsoft, it also creates vulnerabilities if not handled carefully.\n\nThis vulnerability affects PocketMine-MP servers exposed to a public network where unknown actors may have access.\n\n### PoC\n1. Connect to the server using a custom client.\n\n2. Send a Minecraft `LoginPacket` containing an unexpected JSON property (e.g., invalid_key) within the ClientData.\n\n3. Set the value of invalid_key to a highly recursive or massive object structure (e.g., an array containing millions of element","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 5.41.1"]}],"null_published_at":"2026-10-31T22:13:01.440Z","source_updated_at":"2026-09-10T03:56:12.193Z","source_disclosed_at":"2026-04-06T22:54:03.000Z","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":"2026-10-31T21:42:20.426Z"}],"next_cursor":null,"snapshot_revision":"42594"}