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[GHSA-5j59-xgg2-r9c4] Next has a Denial of Service with Server Components - Incomplete Fix Follow-Up #6635

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[GHSA-5j59-xgg2-r9c4] Next has a Denial of Service with Server Components - Incomplete Fix Follow-Up #6635

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8 changes: 2 additions & 6 deletions advisories/github-reviewed/2025/12/GHSA-5j59-xgg2-r9c4/GHSA-5j59-xgg2-r9c4.json
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{
"schema_version": "1.4.0",
"id": "GHSA-5j59-xgg2-r9c4",
"modified": "2025-12-12T17:21:58Z",
"modified": "2025-12-12T17:22:00Z",
"published": "2025-12-12T17:21:57Z",
"aliases": [],
"summary": "Next has a Denial of Service with Server Components - Incomplete Fix Follow-Up",
"details": "It was found that the fix addressing [CVE-2025-55184](https://github.com/advisories/GHSA-2m3v-v2m8-q956) in React Server Components was incomplete and did not fully prevent denial-of-service attacks in all payload types. This affects React package versions 19.0.2, 19.1.3, and 19.2.2 and frameworks that use the affected packages, including Next.js 13.x, 14.x, 15.x and 16.x using the App Router. The issue is tracked upstream as [CVE-2025-67779](https://www.cve.org/CVERecord?id=CVE-2025-67779).\n\nA malicious HTTP request can be crafted and sent to any Server Function endpoint that, when deserialized, can enter an infinite loop within the React Server Components runtime. This can cause the server process to hang and consume CPU, resulting in denial of service in unpatched environments.",
"details": "It was discovered that the fix for [CVE-2025-55184](https://github.com/advisories/GHSA-2m3v-v2m8-q956) in React Server Components was incomplete and did not fully mitigate denial-of-service conditions across all payload types. As a result, certain crafted inputs could still trigger excessive resource consumption.\n\nThis vulnerability affects React versions 19.0.2, 19.1.3, and 19.2.2, as well as frameworks that bundle or depend on these versions, including Next.js 13.x, 14.x, 15.x, and 16.x when using the App Router. The issue is tracked upstream as [CVE-2025-67779](https://www.cve.org/CVERecord?id=CVE-2025-67779).\n\nA malicious actor can send a specially crafted HTTP request to a Server Function endpoint that, when deserialized, causes the React Server Components runtime to enter an infinite loop. This can lead to sustained CPU consumption and cause the affected server process to become unresponsive, resulting in a denial-of-service condition in unpatched environments.",
"severity": [
{
"type": "CVSS_V3",
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{
"type": "WEB",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-55184"
},
{
"type": "WEB",
"url": "https://www.facebook.com/security/advisories/cve-2025-67779"
}
],
"database_specific": {
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