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[GHSA-xq8m-7c5p-c2r6] Auth0 Next.js SDK has Improper Proxy Cache Lookup #9636

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[GHSA-xq8m-7c5p-c2r6] Auth0 Next.js SDK has Improper Proxy Cache Lookup #9636

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Improve GHSA-xq8m-7c5p-c2r6
nikpivkin Sep 19, 2026
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Improve GHSA-xq8m-7c5p-c2r6
nikpivkin Sep 19, 2026
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9 changes: 3 additions & 6 deletions advisories/github-reviewed/2026/04/GHSA-xq8m-7c5p-c2r6/GHSA-xq8m-7c5p-c2r6.json
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{
"schema_version": "1.4.0",
"id": "GHSA-xq8m-7c5p-c2r6",
"modified": "2026-04-21T15:21:46Z",
"modified": "2026-04-21T15:21:47Z",
"published": "2026-04-21T15:21:46Z",
"aliases": [
"CVE-2026-40155"
],
"summary": "Auth0 Next.js SDK has Improper Proxy Cache Lookup",
"details": "### Description\nIn affected versions of the Next.js SDK, simultaneous requests that trigger a nonce retry may cause the proxy cache fetcher to perform improper lookups for the token request results.\n\n### Which Projects are Affected?\nUsers are affected if they meet all of the following preconditions:\n- Applications using the auth0/nextjs-auth0 SDK, versions 4.12.0 to 4.17.0, and\n- Applications using the proxy handler /me/* and /my-org/* with DPoP enabled.\n\n\n### Affected product and versions\nAuth0/nextjs-auth0 v4.12.0 to 4.17.0\n\n### Resolution\nUpgrade Auth0/nextjs-auth0 version to v4.18.0 or greater\n\n### Acknowledgements\nOkta would like to thank Reynaldo Immanuel for their discovery and responsible disclosure.",
"details": "### Description\nIn affected versions of the Next.js SDK, simultaneous requests that trigger a nonce retry may cause the proxy cache fetcher to perform improper lookups for the token request results.\n\n### Which Projects are Affected?\nUsers are affected if they meet all of the following preconditions:\n- Applications using the auth0/nextjs-auth0 SDK, versions 4.12.0 to 4.17.1, and\n- Applications using the proxy handler /me/* and /my-org/* with DPoP enabled.\n\n\n### Affected product and versions\nAuth0/nextjs-auth0 v4.12.0 to 4.17.1\n\n### Resolution\nUpgrade Auth0/nextjs-auth0 version to v4.18.0 or greater\n\n### Acknowledgements\nOkta would like to thank Reynaldo Immanuel for their discovery and responsible disclosure.",
"severity": [
{
"type": "CVSS_V3",
Expand All @@ -32,10 +32,7 @@
}
]
}
],
"database_specific": {
"last_known_affected_version_range": "<= 4.17.0"
}
]
}
],
"references": [
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