1 files changed, 3 insertions, 0 deletions
diff --git a/Misc/NEWS b/Misc/NEWS
index 832d1ac..fe3071e 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -226,6 +226,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #26560: Avoid potential ValueError in BaseHandler.start_response.
+  Initial patch by Peter Inglesby.
+
 - Issue #26567: Add a new function :c:func:`PyErr_ResourceWarning` function to
   pass the destroyed object. Add a *source* attribute to
   :class:`warnings.WarningMessage`. Add warnings._showwarnmsg() which uses