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        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
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        "text": "* ALTNJS-243: Initial build for arm platforms",
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          "text": "A flaw in Node.js's buffer allocation logic can expose uninitialized memory when allocations are interrupted, when using the `vm` module with the timeout option. Under specific timing conditions, buffers allocated with `Buffer.alloc` and other `TypedArray` instances like `Uint8Array` may contain leftover data from previous operations, allowing in-process secrets like tokens or passwords to leak or causing data corruption. While exploitation typically requires precise timing or in-process code execution, it can become remotely exploitable when untrusted input influences workload and timeouts, leading to potential confidentiality and integrity impact.",
          "title": "Vulnerability description"
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          "title": "Vulnerability description"
        },
        {
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          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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          "text": "A flaw in Node.js TLS error handling allows remote attackers to crash or exhaust resources of a TLS server when `pskCallback` or `ALPNCallback` are in use. Synchronous exceptions thrown during these callbacks bypass standard TLS error handling paths (tlsClientError and error), causing either immediate process termination or silent file descriptor leaks that eventually lead to denial of service. Because these callbacks process attacker-controlled input during the TLS handshake, a remote client can repeatedly trigger the issue. This vulnerability affects TLS servers using PSK or ALPN callbacks across Node.js versions where these callbacks throw without being safely wrapped.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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        {
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          "summary": "https://nodejs.org/en/blog/vulnerability/december-2025-security-releases",
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        }
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          "text": "A malformed `HTTP/2 HEADERS` frame with oversized, invalid `HPACK` data can cause Node.js to crash by triggering an unhandled `TLSSocket` error `ECONNRESET`. Instead of safely closing the connection, the process crashes, enabling a remote denial of service. This primarily affects applications that do not attach explicit error handlers to secure sockets, for example:\n```\nserver.on('secureConnection', socket => {\nsocket.on('error', err => {\nconsole.log(err)\n})\n})\n```",
          "title": "Vulnerability description"
        },
        {
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          "title": "Vulnerability description"
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      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-03-02T15:49:23.149986Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els-alt-nodejs/releases/CLSA-2026:1772466560",
          "product_ids": [
            "Debian-13:alt-nodejs18-docs-0:18.20.8-8.arm64",
            "Debian-13:alt-nodejs18-nodejs-0:18.20.8-8.arm64",
            "Debian-13:alt-nodejs18-nodejs-devel-0:18.20.8-8.arm64",
            "Debian-13:alt-nodejs18-npm-0:10.8.2-18.20.8.5.arm64"
          ],
          "url": "https://cve.tuxcare.com/els-alt-nodejs/releases/CLSA-2026:1772466560"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "products": [
            "Debian-13:alt-nodejs18-docs-0:18.20.8-8.arm64",
            "Debian-13:alt-nodejs18-nodejs-0:18.20.8-8.arm64",
            "Debian-13:alt-nodejs18-nodejs-devel-0:18.20.8-8.arm64",
            "Debian-13:alt-nodejs18-npm-0:10.8.2-18.20.8.5.arm64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}