Dev note: Node.js just dropped its June 2026 security update. This patch set fixes 12 vulnerabilities total—2 high risk, 6 medium, and 4 low. If you’re running Node.js 22, 24, or 26, this matters. Affected versions: Node.js 22, Node.js 24, Node.js 26. Recommended upgrades (patched releases): Node.js 22.23.0, Node.js 24.17.0, and Node.js 26.3.1. Don’t leave known issues sitting in production. What’s included isn’t only “core bugs.” Several bundled components were updated too: llhttp 9.4.2 (HTTP parsing), nghttp2 1.69.0 (HTTP/2), OpenSSL 3.5.7 (TLS/SSL), and undici (HTTP/1.1 client) with multiple impacted versions. High-risk highlights: - CVE-2026-48933 (WebCrypto): AES encrypt/decrypt can hit integer overflow → buffer overflow risk, plus potential service-stall/DoS when input is 2 GiB multiples. - CVE-2026-48618 (TLS hostname parsing): Unicode separator parsing inconsistencies can break wildcard certificate validation, potentially weakening confidentiality. Upgrade the runtime first—and verify dependencies are aligned to the fixed component versions. #NodeJS #SecurityUpdate #VulnerabilityPatch #CVE #DevOps #AppSec
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