.. _version_history_1.31.4:

1.31.4 (December 8, 2024)
==========================





Minor behavior changes
----------------------

*Changes that may cause incompatibilities for some users, but should not for most*



* **dns**: Patched c-ares to address CVE-2024-25629.



Bug fixes
---------

*Changes expected to improve the state of the world and are unlikely to have negative effects*



* **access_log**: Relaxed the restriction on SNI logging to allow the ``_`` character, even if
  ``envoy.reloadable_features.sanitize_sni_in_access_log`` is enabled.
* **tracers**: Avoid possible overflow when setting span attributes in Dynatrace sampler.
* **validation/tools**: Add back missing extension for ``schema_validator_tool``.