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A vulnerability in the Node.js WebCrypto implementation causes the Node.js process to crash when the input to the subtle.encrypt() function is a multiple of 2 GiB. This affects multiple supported Node.js release lines including 22, 24, and 26, as well as specific Ubuntu package versions. Red Hat has issued security advisories with patches addressing this issue.

CVE-2026-48933 describes a flaw in the Node.js WebCrypto implementation where invoking subtle.encrypt() with input sizes that are multiples of 2 GiB causes the Node.js process to crash. This denial-of-service vulnerability affects all supported Node.js release lines 22, 24, and 26 in certain versions, as well as several Ubuntu package versions. Red Hat has published multiple security advisories providing patched RPM packages for Red Hat Hardened Images and related Node.js builds to remediate this issue.

Detailed information about A flaw in Node.js WebCrypto implementation can crash the process if the input of subtle.encrypt() is a multiple of 2GiB. (CVE-2026-48

A flaw in Node.js WebCrypto implementation can crash the process if the input of subtle.encrypt() is a multiple of 2GiB. (CVE-2026-48933) - Live Threat Intelligence - Threat Radar | OffSeq.com

Nodejs: A flaw in Node.js WebCrypto implementation can crash the process if the input of subtle.encrypt() is a multiple of 2GiB. (CVE-2026-48933)

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