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vuln-cve/data/2026/90xxx/CVE-2026-90771.json
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{
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"cveId": "CVE-2026-90771",
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"state": "PUBLISHED",
"assignerShortName": "VulnCheck",
"dateReserved": "2026-09-13T10:14:57.680Z",
"datePublished": "2026-09-13T10:45:42.498Z",
"dateUpdated": "2026-09-24T14:21:52.339Z"
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},
"datePublic": "2026-09-09T00:00:00.000Z",
"title": "joi before 17.13.8 and 18.2.9 Prototype Pollution via messages",
"descriptions": [
{
"lang": "en",
"value": "joi before versions 17.13.8 and 18.2.9 contains a prototype pollution vulnerability in the messages compilation function that accepts __proto__ as an error code. Attackers can supply __proto__ keys in custom messages to replace the returned object's prototype, breaking downstream code relying on Object.prototype methods."
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{
"lang": "en",
"description": "Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')",
"cweId": "CWE-1321",
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"vendor": "hapijs",
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"version": "16.0.0",
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"url": "https://github.com/hapijs/joi/issues/3150",
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"name": "GitHub Issue #3150"
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"url": "https://github.com/hapijs/joi/blob/v18.2.8/lib/messages.js",
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"url": "https://www.vulncheck.com/advisories/joi-before-17.13.8-and-18.2.9-prototype-pollution-via-messages"
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"role": "CISA Coordinator",
"version": "2.0.3"
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"title": "CISA ADP Vulnrichment",
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