Summary

v4.12.15 patches JWT key parsing to accept PEM keys provided as a single line (no embedded newline characters). This fixes token verification failures when keys are compacted/minified into a single-line PEM string. The change was merged in PR #4889 by @hiendv (commit f774f8d). Published: 2026-04-24T06:51:23.000Z.

Key Points

• Fix: JWT verification now supports single-line PEM-formatted keys (PEM without line breaks).
• Impact: Resolves verification errors when using compacted/minified PEM keys; no public API changes or breaking changes.
• Action: Upgrade to v4.12.15 if you verify JWTs with PEM keys; no code changes are required unless you rely on non-standard key parsing behavior.
• Metadata: PR #4889, contributor @hiendv (first contribution).