The June 18 2026 Node.js security releases fix several HIGH/MEDIUM CVEs
on the 24.x line, with 24.17.0 as the first patched release. The service
images were pinned to 24.15, below that line. Bump to 24.18-alpine3.23
(latest 24.x) to pick up the fixes, including:
- CVE-2026-48618 (HIGH) TLS wildcard-depth auth bypass
- CVE-2026-48933 (HIGH) WebCrypto AES integer overflow crash
- CVE-2026-48928/48930/48934 (MEDIUM) TLS/SNI identity verification bypasses
- CVE-2026-48619 (MEDIUM) unbounded HTTP/2 memory growth via ORIGIN frames
Advisory: https://nodejs.org/en/blog/vulnerability/june-2026-security-releases
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* Update Node.js to 20.x in Dockerfile
* Update Node.js types and engines entry to 20.x
* Update Node.js version in .nvmrc
* Use node version from .nvmrc in linting job
* Use Type Assertion for clearTimeout
Austin McKinley