labstack/echo v4.16.2

on GitHub

Fixes

• Require a space after the case-insensitive Basic authentication scheme. Malformed schemes such as BasicX no longer invoke the credential validator. Valid credentials are still required. This adapts the v5 correction to v4's single-header API. #3188, backport of #3138, with credit to @Shubham-Padkonde.
• Reject empty cookie tokens and empty client tokens in CSRF validation. This is defense in depth; it does not introduce a new security advisory. #3189, backport of #3135, with credit to @hoangtaiki.
• Reject CSRFConfig.TokenLookup configurations that produce no recognized token extractors. Middleware creation now returns an error instead of silently skipping token validation. #3149, thanks to @orinnz; backport of the existing v5 validation in #3067.

Upgrade

go get github.com/labstack/echo/v4@v4.16.2

Go 1.26 remains the module minimum. Build deployments with a supported, patched Go toolchain. No dependencies or public APIs changed in this release. Applications with invalid CSRF token lookup configuration will now fail middleware creation at startup.

The security fixes, bounded BodyDump and Decompress defaults, and dependency updates released in v4.16.1 are included unchanged. Their first patched version remains v4.16.1.

Validation: the fixes passed regression tests and upstream race-test, lint and benchmark checks on Linux, macOS and Windows with Go 1.26 and 1.27. The new regressions were also verified to fail without the fixes; local race tests and vet passed.

Full changelog: v4.16.1...v4.16.2