{"items":[{"id":"NVI-00013848","kind":"vulnerability","title":"xmldom: Quadratic-memory consumption","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-965w-775f-mr7g","CVE-2026-83615"],"plain_summary":"GitHub lists this reviewed advisory for @xmldom/xmldom, @xmldom/xmldom, xmldom. 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-09193ec6b040fc5116d275a7fdc25f97"],"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":"2026-11-04T12:03:12.000Z","value":"0.590%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.48318. Missing scores are unknown.","source_id":"sr-09193ec6b040fc5116d275a7fdc25f97"}],"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-0eec118c7a7c35e21719ecd68c4b3735","url":"https://github.com/advisories/GHSA-965w-775f-mr7g","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-965w-775f-mr7g","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T22:54:12.705Z"},{"id":"sr-09193ec6b040fc5116d275a7fdc25f97","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-2026-83615","publisher":"FIRST EPSS","observed_at":"2026-11-04T23:33:33.072Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0eec118c7a7c35e21719ecd68c4b3735"],"technology":"@xmldom/xmldom","known_exclusions":[],"conditions_summary":"## Summary\n\nWhen an element declares a namespace prefix, xmldom copies the entire in-scope namespace map\ninto a fresh object and keeps that copy on the element while it is open on the parse stack. A\ncrafted document that nests N elements, each declaring one unique prefix, therefore drives the\nparser to hold on the order of N(N+1)/2 = **O(N²) namespace-map entries at its peak**, so a small,\nhighly compressible input exhausts the heap. Parsing runs under default options on untrusted,\nnetwork-delivered XML, so a sub-megabyte payload can OOM-crash the process before any\napplication-level validation runs — an unauthenticated denial of service.\n\n## Details\n\n`appendElement` performs the copy: `_copy` clones the current namespace map into a fresh object for\neach prefix-declaring element, and the copy is retained on that element's parse-stack entry:\n\n```js\nif (localNSMap == null) {\n    localNSMap = Object.create(null);\n    _copy(currentNSMap, (currentNSMap = Object.create(null)));   // full copy of all ancestor prefixes\n}\ncurrentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;\n...\nel.currentNSMap = currentNSMap;   // retained while the element is open on the parse stack\n```\n\nhttps://github.c","public_affected_ranges":[">= 0.7.0, <= 0.8.14"]},{"certainty":"source_listed","source_ids":["sr-0eec118c7a7c35e21719ecd68c4b3735"],"technology":"@xmldom/xmldom","known_exclusions":[],"conditions_summary":"## Summary\n\nWhen an element declares a namespace prefix, xmldom copies the entire in-scope namespace map\ninto a fresh object and keeps that copy on the element while it is open on the parse stack. A\ncrafted document that nests N elements, each declaring one unique prefix, therefore drives the\nparser to hold on the order of N(N+1)/2 = **O(N²) namespace-map entries at its peak**, so a small,\nhighly compressible input exhausts the heap. Parsing runs under default options on untrusted,\nnetwork-delivered XML, so a sub-megabyte payload can OOM-crash the process before any\napplication-level validation runs — an unauthenticated denial of service.\n\n## Details\n\n`appendElement` performs the copy: `_copy` clones the current namespace map into a fresh object for\neach prefix-declaring element, and the copy is retained on that element's parse-stack entry:\n\n```js\nif (localNSMap == null) {\n    localNSMap = Object.create(null);\n    _copy(currentNSMap, (currentNSMap = Object.create(null)));   // full copy of all ancestor prefixes\n}\ncurrentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;\n...\nel.currentNSMap = currentNSMap;   // retained while the element is open on the parse stack\n```\n\nhttps://github.c","public_affected_ranges":[">= 0.9.0, <= 0.9.11"]},{"certainty":"source_listed","source_ids":["sr-0eec118c7a7c35e21719ecd68c4b3735"],"technology":"xmldom","known_exclusions":[],"conditions_summary":"## Summary\n\nWhen an element declares a namespace prefix, xmldom copies the entire in-scope namespace map\ninto a fresh object and keeps that copy on the element while it is open on the parse stack. A\ncrafted document that nests N elements, each declaring one unique prefix, therefore drives the\nparser to hold on the order of N(N+1)/2 = **O(N²) namespace-map entries at its peak**, so a small,\nhighly compressible input exhausts the heap. Parsing runs under default options on untrusted,\nnetwork-delivered XML, so a sub-megabyte payload can OOM-crash the process before any\napplication-level validation runs — an unauthenticated denial of service.\n\n## Details\n\n`appendElement` performs the copy: `_copy` clones the current namespace map into a fresh object for\neach prefix-declaring element, and the copy is retained on that element's parse-stack entry:\n\n```js\nif (localNSMap == null) {\n    localNSMap = Object.create(null);\n    _copy(currentNSMap, (currentNSMap = Object.create(null)));   // full copy of all ancestor prefixes\n}\ncurrentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;\n...\nel.currentNSMap = currentNSMap;   // retained while the element is open on the parse stack\n```\n\nhttps://github.c","public_affected_ranges":[">= 0.1.5, <= 0.6.0"]}],"null_published_at":"2026-11-06T07:24:11.289Z","source_updated_at":"2026-09-08T21:00:54.000Z","source_disclosed_at":"2026-09-08T21:00:52.000Z","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":"2026-11-01T22:54:12.705Z"},{"id":"NVI-00013848","kind":"vulnerability","title":"xmldom: Quadratic-memory consumption","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-965w-775f-mr7g","CVE-2026-83615"],"plain_summary":"GitHub lists this reviewed advisory for @xmldom/xmldom, @xmldom/xmldom, xmldom. 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-0eec118c7a7c35e21719ecd68c4b3735"],"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":[],"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-0eec118c7a7c35e21719ecd68c4b3735","url":"https://github.com/advisories/GHSA-965w-775f-mr7g","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-965w-775f-mr7g","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T22:54:12.705Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0eec118c7a7c35e21719ecd68c4b3735"],"technology":"@xmldom/xmldom","known_exclusions":[],"conditions_summary":"## Summary\n\nWhen an element declares a namespace prefix, xmldom copies the entire in-scope namespace map\ninto a fresh object and keeps that copy on the element while it is open on the parse stack. A\ncrafted document that nests N elements, each declaring one unique prefix, therefore drives the\nparser to hold on the order of N(N+1)/2 = **O(N²) namespace-map entries at its peak**, so a small,\nhighly compressible input exhausts the heap. Parsing runs under default options on untrusted,\nnetwork-delivered XML, so a sub-megabyte payload can OOM-crash the process before any\napplication-level validation runs — an unauthenticated denial of service.\n\n## Details\n\n`appendElement` performs the copy: `_copy` clones the current namespace map into a fresh object for\neach prefix-declaring element, and the copy is retained on that element's parse-stack entry:\n\n```js\nif (localNSMap == null) {\n    localNSMap = Object.create(null);\n    _copy(currentNSMap, (currentNSMap = Object.create(null)));   // full copy of all ancestor prefixes\n}\ncurrentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;\n...\nel.currentNSMap = currentNSMap;   // retained while the element is open on the parse stack\n```\n\nhttps://github.c","public_affected_ranges":[">= 0.7.0, <= 0.8.14"]},{"certainty":"source_listed","source_ids":["sr-0eec118c7a7c35e21719ecd68c4b3735"],"technology":"@xmldom/xmldom","known_exclusions":[],"conditions_summary":"## Summary\n\nWhen an element declares a namespace prefix, xmldom copies the entire in-scope namespace map\ninto a fresh object and keeps that copy on the element while it is open on the parse stack. A\ncrafted document that nests N elements, each declaring one unique prefix, therefore drives the\nparser to hold on the order of N(N+1)/2 = **O(N²) namespace-map entries at its peak**, so a small,\nhighly compressible input exhausts the heap. Parsing runs under default options on untrusted,\nnetwork-delivered XML, so a sub-megabyte payload can OOM-crash the process before any\napplication-level validation runs — an unauthenticated denial of service.\n\n## Details\n\n`appendElement` performs the copy: `_copy` clones the current namespace map into a fresh object for\neach prefix-declaring element, and the copy is retained on that element's parse-stack entry:\n\n```js\nif (localNSMap == null) {\n    localNSMap = Object.create(null);\n    _copy(currentNSMap, (currentNSMap = Object.create(null)));   // full copy of all ancestor prefixes\n}\ncurrentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;\n...\nel.currentNSMap = currentNSMap;   // retained while the element is open on the parse stack\n```\n\nhttps://github.c","public_affected_ranges":[">= 0.9.0, <= 0.9.11"]},{"certainty":"source_listed","source_ids":["sr-0eec118c7a7c35e21719ecd68c4b3735"],"technology":"xmldom","known_exclusions":[],"conditions_summary":"## Summary\n\nWhen an element declares a namespace prefix, xmldom copies the entire in-scope namespace map\ninto a fresh object and keeps that copy on the element while it is open on the parse stack. A\ncrafted document that nests N elements, each declaring one unique prefix, therefore drives the\nparser to hold on the order of N(N+1)/2 = **O(N²) namespace-map entries at its peak**, so a small,\nhighly compressible input exhausts the heap. Parsing runs under default options on untrusted,\nnetwork-delivered XML, so a sub-megabyte payload can OOM-crash the process before any\napplication-level validation runs — an unauthenticated denial of service.\n\n## Details\n\n`appendElement` performs the copy: `_copy` clones the current namespace map into a fresh object for\neach prefix-declaring element, and the copy is retained on that element's parse-stack entry:\n\n```js\nif (localNSMap == null) {\n    localNSMap = Object.create(null);\n    _copy(currentNSMap, (currentNSMap = Object.create(null)));   // full copy of all ancestor prefixes\n}\ncurrentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;\n...\nel.currentNSMap = currentNSMap;   // retained while the element is open on the parse stack\n```\n\nhttps://github.c","public_affected_ranges":[">= 0.1.5, <= 0.6.0"]}],"null_published_at":"2026-11-02T10:00:37.159Z","source_updated_at":"2026-09-08T21:00:54.000Z","source_disclosed_at":"2026-09-08T21:00:52.000Z","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":"2026-11-01T22:54:12.705Z"}],"next_cursor":null,"snapshot_revision":"42594"}