v2026.09.22
vectorize-io/hindsightv2026.09.22Sep 21, 2026by knu
Upgrading?
AI Summary
A security and compatibility update that restricts legacy JSONPath method calls and migrates evaluation to RFC 9535 by default.
Key Highlights
- Restrict legacy JSONPath method calls to an allowlist.
- Use RFC 9535 JSONPath evaluation by default.
- Database migration for expressions with conservative compatibility checks.
Breaking Changes
- Migration to RFC 9535 JSONPath changes evaluation behavior; legacy evaluation requires a compatibility flag.
New Features
- JSONPath security guard
- RFC 9535 JSONPath support
- Allowlist mechanism for legacy methods
Full Release Notes
# v2026.09.22 ## JSONPath safety and compatibility - Restrict legacy JSONPath method calls to an allowlist for JSON value types. The guard also covers filters, computed indexes, and direct uses of the jsonpath gem. See [GHSA-9x7r-mpvj-vj8v](https://github.com/huginn/huginn/security/advisories/GHSA-9x7r-mpvj-vj8v). - Use RFC 9535 JSONPath evaluation by default. Agents requiring legacy behavior can use `use_legacy_jsonpath: true`; legacy evaluation remains subject to the method allowlist. - Normalize examples and defaults to JSONPath expressions with an explicit `$` root. ## Upgrading The database migration converts expressions only when compatibility can be established conservatively. Agents with uncertain expressions retain their original paths and receive `use_legacy_jsonpath: true`. The migration lists affected Agent URLs grouped by user, without exposing expressions or event data. Review these Agents before removing the compatibility flag. See the [upgrade guide](https://github.com/huginn/huginn/blob/v2026.09.22/UPGRADING.md#gradual-migration-to-rfc-9535-jsonpath) for migration steps and compatibility considerations. **Full Changelog**: https://github.com/huginn/huginn/compare/v2026.09.21...v2026.09.22
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