FKIE_CVE-2025-67779

Vulnerability from fkie_nvd - Published: 2025-12-12 00:15 - Updated: 2025-12-12 19:16
Summary
It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. React Server Components versions 19.0.2, 19.1.3 and 19.2.2 are affected, allowing unsafe deserialization of payloads from HTTP requests to Server Function endpoints. This can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served.
Impacted products
Vendor Product Version
facebook react 19.0.2
facebook react 19.1.3
facebook react 19.2.2
vercel next.js *
vercel next.js *
vercel next.js *
vercel next.js *
vercel next.js *
vercel next.js *
vercel next.js *
vercel next.js *
vercel next.js 15.6.0
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vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
vercel next.js 15.6.0
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vercel next.js 15.6.0
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. React Server Components versions 19.0.2, 19.1.3 and 19.2.2 are affected, allowing unsafe deserialization of payloads from HTTP requests to Server Function endpoints. This can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served."
    }
  ],
  "id": "CVE-2025-67779",
  "lastModified": "2025-12-12T19:16:03.773",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "cve-assign@fb.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-12-12T00:15:46.797",
  "references": [
    {
      "source": "cve-assign@fb.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components"
    },
    {
      "source": "cve-assign@fb.com",
      "tags": [
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      ],
      "url": "https://www.facebook.com/security/advisories/cve-2025-67779"
    }
  ],
  "sourceIdentifier": "cve-assign@fb.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
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      ],
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      "type": "Secondary"
    }
  ]
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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