.. _version_history_1.35.12:

1.35.12 (June 10, 2026)
========================






Bug fixes
---------

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



* **runtime**: Fixed a bug where removing an RTDS override for an ``envoy.reloadable_features`` runtime guard
  updated the admin runtime view but left the process-wide runtime guard set to the previous
  overridden value.




New features
------------


* **http2**: Added ``envoy.reloadable_features.http2_max_cookies_size_in_kb`` runtime value to set the limit on the contents
  of the re-assembled ``cookie`` header. By default there is no limit on the cookie size.
* **http2**: Added histograms for HTTP/2 header stats, tracking total count of header entries received (including
  individual ``cookie`` headers), total byte size of header map entries, total length of the re-assebled ``cookie``
  header and total count of individual ``cookie`` headers. Histograms are disabled by default and can be enabled by
  setting the runtime guard ``envoy.reloadable_features.http2_record_histograms`` to ``true``.
  The histograms and the runtime guard will be removed in a future release of Envoy.