139 lines
6.0 KiB
JSON
139 lines
6.0 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-2026-82404",
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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": "2026-08-28T22:00:43.513Z",
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"datePublished": "2026-09-02T16:30:54.876Z",
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"dateUpdated": "2026-09-02T18:59:07.868Z"
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},
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"containers": {
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"cna": {
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"title": "TOON: Prototype pollution when decoding untrusted TOON input",
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"problemTypes": [
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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": "LOW",
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"baseScore": 8.3,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "LOW",
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"integrityImpact": "LOW",
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"privilegesRequired": "NONE",
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"scope": "CHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L",
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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/toon-format/toon/security/advisories/GHSA-p95v-992w-h6c3",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/toon-format/toon/security/advisories/GHSA-p95v-992w-h6c3"
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},
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{
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"name": "https://github.com/toon-format/toon/pull/316",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/toon-format/toon/pull/316"
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},
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{
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"name": "https://github.com/toon-format/toon/commit/94a2b7560b2b5ed903a4d466a3bce8b13daa2660",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/toon-format/toon/commit/94a2b7560b2b5ed903a4d466a3bce8b13daa2660"
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},
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{
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"name": "https://github.com/toon-format/toon/releases/tag/v2.3.1",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/toon-format/toon/releases/tag/v2.3.1"
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}
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],
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"affected": [
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{
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"vendor": "toon-format",
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"product": "toon",
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"versions": [
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{
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"version": "< 2.3.1",
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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": "2026-09-02T16:30:54.876Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "TOON is a compact, human-readable serialization of JSON data for LLM prompts. Prior to 2.3.1, decoding attacker-controlled TOON with a __proto__, constructor, or prototype key wrote through the object prototype chain instead of creating an own property, polluting Object.prototype for the runtime. In packages/toon/src/decode/expand.ts, the expandPaths: 'safe' path and insertPathSafe function made dotted keys such as a.__proto__.x the strongest vector, while plain nested objects, tabular rows, quoted keys, and streaming decode were also affected. The encoder also dropped own __proto__ properties and could invoke an inherited setter during normalization. Services that decode untrusted TOON could experience denial of service or, when a suitable downstream gadget is present, remote code execution. This issue is fixed in version 2.3.1."
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}
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],
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"source": {
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"advisory": "GHSA-p95v-992w-h6c3",
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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": "2026-09-02T18:58:59.419694Z",
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"id": "CVE-2026-82404",
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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": "2026-09-02T18:59:07.868Z"
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}
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}
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]
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}
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} |