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Protobuf parser rejects valid nested extension syntax in custom options

Status: Open.

#4470 In confluentinc/schema-registry;

· tmanninger opened on Jul 31, 2026

Orphan _schemas keys after hard delete: legacy key byte format survives compaction and resurrects schemas on Schema Registry restart

Status: Open.

#4420 In confluentinc/schema-registry;

· YauheniMakar opened on Jul 13, 2026

Failed to collect dependencies at io.confluent:kafka-avro-serializer:jar:7.8.8

Status: Open.

#4379 In confluentinc/schema-registry;

· Florent Biville (fbiville) opened on Jun 16, 2026

Dependency upgrade: replace wire-runtime-jvm with wire-runtime 6.3.0+ to address CVE-2026-45799

Status: Open.

#4336 In confluentinc/schema-registry;

· fivetran-allisonrochelle opened on Jun 1, 2026

Optimize Json and Avro deserializers – use byte array with offset/size from ByteBuffer.array()

Status: Open.

#4327 In confluentinc/schema-registry;

· didvdk opened on May 25, 2026

SASL_OAUTHBEARER_INHERIT doesn't work with direct authorization properties

Status: Open.

#4248 In confluentinc/schema-registry;

· Aleksandra Kobusinska (AleksandraKobusinska) opened on Apr 14, 2026

OpenAPI spec YAML file distribution

Status: Open.

#4222 In confluentinc/schema-registry;

· koalalam opened on Mar 26, 2026

High CPU utilization when migrating to "consumer" group protocols. ( 8.1.1 and 8.2.0)

Status: Open.

#4188 In confluentinc/schema-registry;

· uananth opened on Mar 9, 2026

kafka-json-serializer 8.2.0 -> GHSA-72hv-8253-57qq, Score: 7.5

Status: Open.

#4181 In confluentinc/schema-registry;

· patpatpat123 opened on Mar 4, 2026

Protobuf exception using Connect Protobuf converter, due to mistaken use of Protobuf 3: Type 'com/google/protobuf/DescriptorProtos$EnumValueOptions' (current frame, stack[1]) is not assignable to 'com/google/protobuf/GeneratedMessage$ExtendableMessage'

Status: Open.

#4133 In confluentinc/schema-registry;

· James Johnston (james-johnston-thumbtack) opened on Feb 13, 2026

Incorrect handling of default values for union fields (Avro spec mismatch)

Status: Open.

#4112 In confluentinc/schema-registry;

· Evgeniy Rudikov (rudikone) opened on Jan 30, 2026

Schema Registry giving 401 error

Status: Open.

#4109 In confluentinc/schema-registry;

· shankar0909 opened on Jan 26, 2026