Better Auth: OAuth refresh-token replay via missing client authentication on oidc-provider and mcp plugins
High-risk advisory
CVE-2026-53512
Summary
Better Auth: OAuth refresh-token replay via missing client authentication on oidc-provider and mcp plugins
Why it matters
GitHub has published a reviewed security advisory for better-auth. Prioritize it with other application dependency updates.
Operator check
Check whether better-auth is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.