142 lines
6.3 KiB
JSON
142 lines
6.3 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-55091",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-06-16T14:41:54.578Z",
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"datePublished": "2026-09-14T17:26:38.877Z",
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"dateUpdated": "2026-09-14T20:05:59.070Z"
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},
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"containers": {
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"cna": {
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"title": "flat-to-nested: Prototype pollution in flat-to-nested convert() via __proto__ parent/id key",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-915",
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"lang": "en",
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"description": "CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes",
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"type": "CWE"
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}
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]
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},
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{
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"descriptions": [
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{
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"cweId": "CWE-1321",
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"lang": "en",
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"description": "CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 7.5,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "NONE",
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"integrityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/joaonuno/flat-to-nested-js/security/advisories/GHSA-hp36-v28f-w3r4",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/joaonuno/flat-to-nested-js/security/advisories/GHSA-hp36-v28f-w3r4"
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},
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{
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"name": "https://github.com/joaonuno/flat-to-nested-js/commit/680a5ebe1194edda16fa93baaa56ff14fe0e3d7f",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/joaonuno/flat-to-nested-js/commit/680a5ebe1194edda16fa93baaa56ff14fe0e3d7f"
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},
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{
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"name": "https://github.com/joaonuno/flat-to-nested-js/releases/tag/v1.1.2",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/joaonuno/flat-to-nested-js/releases/tag/v1.1.2"
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}
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],
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"affected": [
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{
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"vendor": "joaonuno",
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"product": "flat-to-nested-js",
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"versions": [
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{
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"version": "< 1.1.2",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-09-14T17:26:38.877Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "flat-to-nested converts a hierarchy from a flat representation to a nested representation. Prior to 1.1.2, FlatToNested.prototype.convert in index.js uses attacker-influenced id and parent record fields directly as keys in the plain temp and pendingChildOf objects. When parent or id is __proto__, temp[parent] can resolve to Object.prototype, and initPush() can write attacker-controlled data to the global children prototype property while existing prototype methods remain intact. Any application that passes attacker-influenced flat records to convert() can therefore expose unrelated objects to polluted inherited state, causing application-logic corruption or denial of service and potentially enabling greater impact when a downstream prototype-pollution gadget is present. The constructor and prototype strings are also unsafe inherited-key values in the same lookup design. This issue is fixed in version 1.1.2."
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}
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],
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"source": {
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"advisory": "GHSA-hp36-v28f-w3r4",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-09-14T19:22:11.687253Z",
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"id": "CVE-2026-55091",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-09-14T20:05:59.070Z"
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}
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}
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]
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}
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} |