protocolbuffers

protocolbuffers/protobuf

Protocol Buffers - Google's data interchange format

Stars: 72k
Forks: 16.3k
Open beginner issues: 0
Indexed issues: 146
Avg merge: 1d 17h
Merged PRs (30d): 140

Dominant language: C++
License: No license data
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted

Beginner friendly Everything

Open All

146 open issues indexed

JSON: non-ASCII decimal digits in quoted numeric fields accepted by Python and Java, rejected by C++ Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

protocolbuffers/protobuf#29893 · Opened Sep 19, 2026
protoc --csharp_out: .proto comment text escapes the generated /// comment via CR/NEL/LS/PS Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

protocolbuffers/protobuf#29889 · Opened Sep 19, 2026
MODULE.bazel: crate_universe usage without a lockfile breaks every `bazel mod` command for consumers Open

Difficulty 1/5 Under an hour Newbie friendliness 92/100

protocolbuffers/protobuf#29866 · Opened Sep 18, 2026
[GLD Serializer Benchmark] C protobuf 3.12.4 — spec compliance misses Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

protocolbuffers/protobuf#29792 · Opened Sep 14, 2026
Request a custom option extension number for Wire Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

protocolbuffers/protobuf#29775 · 1 comment · Opened Sep 14, 2026
CI hardening: SHA-pin bazel-contrib actions in release workflows Open

documentation feature request

protocolbuffers/protobuf#29769 · 1 assignee · Opened Sep 13, 2026
[Python] 10 MB `grpc.aio` request latency regression from `protobuf` 4.25.8 to 6.33.6 Open

bug keep open wait for user action

Difficulty 4/5 3-5 days Newbie friendliness 52/100

protocolbuffers/protobuf#29708 · 1 comment · 7 reactions · Opened Sep 10, 2026
[C#] FileDescriptor.GetAllDependedExtensions' extension cache is not thread-safe, causes Dictionary corruption under concurrent FromGeneratedCode calls Open

bug untriaged

Difficulty 3/5 1-2 days Newbie friendliness 68/100

protocolbuffers/protobuf#29696 · 3 reactions · Opened Sep 10, 2026
Python upb: empty extended slice in del repeated_field[start:stop:step] performs an out-of-bounds memmove Open

Difficulty 2/5 1-3 hours Newbie friendliness 92/100

protocolbuffers/protobuf#29672 · Opened Sep 9, 2026
[Python] Null pointer dereference (SIGSEGV) in _message.abi3.so on s390x (big-endian) at process startup — regression from 6.31.1 → 6.32+ Open

bug python wait for user action

Difficulty 4/5 3-5 days Newbie friendliness 45/100

protocolbuffers/protobuf#29651 · 1 comment · Opened Sep 8, 2026
[benchmark] Request for call-path / fairness review (GLD.SerializerBenchmark) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

protocolbuffers/protobuf#29582 · Opened Sep 4, 2026
[benchmark] Request for call-path / fairness review (GLD.SerializerBenchmark) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

protocolbuffers/protobuf#29581 · Opened Sep 4, 2026
Google.Protobuf.dll is not digitally signed in release 3.36.0 (and 3.36.1). Open

bug c#

protocolbuffers/protobuf#29579 · 1 comment · 1 assignee · Opened Sep 4, 2026
[Bazel] Add a mirror fallback for the prebuilt protoc toolchain download Open

feature request untriaged

Difficulty 3/5 1-2 days Newbie friendliness 72/100

protocolbuffers/protobuf#29572 · Opened Sep 3, 2026
[Python] Generated type annotations do not pass mypy strict Open

feature request untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

protocolbuffers/protobuf#29528 · 2 comments · Opened Aug 31, 2026
[Ruby] RepeatedField#each raises without a block instead of returning an Enumerator Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

protocolbuffers/protobuf#29521 · Opened Aug 29, 2026
[Ruby FFI] Map#merge always raises when merging Hash or Map values Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

protocolbuffers/protobuf#29520 · Opened Aug 29, 2026
[Ruby] google-protobuf source_code_uri uses nonexistent v4.x tags Open

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

protocolbuffers/protobuf#29519 · Opened Aug 29, 2026
[Ruby] ListValue#each raises without a block instead of returning an Enumerator Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

protocolbuffers/protobuf#29518 · Opened Aug 29, 2026
[Ruby] Blockless RepeatedField mutators return corrupting proxy enumerators Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

protocolbuffers/protobuf#29517 · Opened Aug 29, 2026
[Ruby] RepeatedField#values_at is aliased to Enumerable#select Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

protocolbuffers/protobuf#29516 · Opened Aug 29, 2026
Python API docs link points to very outdated documentation Open

bug documentation keep open

protocolbuffers/protobuf#29447 · 1 assignee · Opened Aug 26, 2026
py_wheel license metadata still non-SPDX text despite setup.py fix in https://github.com/protocolbuffers/protobuf/pull/9441 Open

bug wait for user action

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

protocolbuffers/protobuf#29440 · 1 comment · Opened Aug 26, 2026
Modernize PHP output Open

feature request keep open php

Difficulty 5/5 Over a week Newbie friendliness 35/100

protocolbuffers/protobuf#29418 · 5 comments · Opened Aug 25, 2026
"_upb_UnreachableFailure", Building wheel for protobuf (pyproject.toml) did not run successfully. Open

bug untriaged

Difficulty 4/5 3-5 days Newbie friendliness 48/100

protocolbuffers/protobuf#29364 · 3 comments · Opened Aug 21, 2026
36.0 macOS prebuilt Bazel tool integrity hashes do not match artifacts Open

bug packaging & distribution

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

protocolbuffers/protobuf#29313 · 6 comments · 10 reactions · Opened Aug 20, 2026
Python: --pyi_out emits ClassVar[int] at module scope for file-level extensions Open

python

protocolbuffers/protobuf#29221 · 3 comments · 1 assignee · Opened Aug 17, 2026
`rust_proto_library` fails in downstream Bzlmod builds due to relative resolution of `//rust:use_upb_kernel` Open

bug rust

protocolbuffers/protobuf#29090 · 2 comments · 1 assignee · Opened Aug 9, 2026
Python enum types are still annotated incorrectly Open

bug python

protocolbuffers/protobuf#29010 · 1 comment · 1 assignee · Opened Aug 4, 2026
C#: packed repeated uint32 lacks the preallocation present in the C++ codec Open

c# feature request

Difficulty 4/5 3-5 days Newbie friendliness 45/100

protocolbuffers/protobuf#28925 · 3 comments · Opened Jul 30, 2026
Feature request: option for JsonFormat.Printer to fail if unknown fields are encountered Open

feature request json

protocolbuffers/protobuf#28922 · 3 comments · 1 assignee · Opened Jul 30, 2026
Quadratic-time denial of service in text_format.Parse for recursive map fields Open

bug python

protocolbuffers/protobuf#28864 · 2 comments · 1 assignee · Opened Jul 28, 2026
It seems there is a typo in C++ Arena Allocation Guide document. Open

feature request

Difficulty 1/5 Under an hour Newbie friendliness 78/100

protocolbuffers/protobuf#28830 · Opened Jul 27, 2026
upb parses float/double field defaults with locale-dependent strtod, breaking descriptor loading under a comma-decimal LC_NUMERIC Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

protocolbuffers/protobuf#28796 · Opened Jul 24, 2026
_message.pyd for Windows Python is missing NX and ASLR Open

38.x bug feature request python

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

protocolbuffers/protobuf#28688 · 1 comment · Opened Jul 20, 2026
[benchmark] Request for call-path / fairness review (GLD.SerializerBenchmark) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

protocolbuffers/protobuf#28661 · Opened Jul 17, 2026
[benchmark] Request for call-path / fairness review (GLD.SerializerBenchmark) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

protocolbuffers/protobuf#28660 · Opened Jul 17, 2026
[benchmark] Request for call-path / fairness review (GLD.SerializerBenchmark) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

protocolbuffers/protobuf#28659 · Opened Jul 17, 2026
[benchmark] Request for call-path / fairness review (GLD.SerializerBenchmark) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

protocolbuffers/protobuf#28658 · Opened Jul 17, 2026
[benchmark] Request for call-path / fairness review (GLD.SerializerBenchmark) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

protocolbuffers/protobuf#28657 · Opened Jul 17, 2026
upb JSON decoder: duplicate @type keys when parsed with ignore_unknowns, the first reached @type is used Open

bug

protocolbuffers/protobuf#28632 · 5 comments · 1 assignee · Opened Jul 17, 2026
Security hardening: --python_out emits unvalidated filename-derived import statements (CWE-94) Open

bug python

Difficulty 4/5 3-5 days Newbie friendliness 62/100

protocolbuffers/protobuf#28615 · 3 comments · Opened Jul 16, 2026
Bazel //:protobuf_python does not bundle the upb extension, so bazel consumers silently fall back to the pure-Python backend Open

bug documentation keep open python upb

protocolbuffers/protobuf#28602 · 2 comments · 1 assignee · Opened Jul 16, 2026
[Ruby] Cannot read message-typed custom options from a rebuilt DescriptorPool (FieldDescriptor#get raises TypeError) Open

Difficulty 4/5 3-5 days Newbie friendliness 58/100

protocolbuffers/protobuf#28390 · Opened Jul 7, 2026
protobuf compiler in multiplatform project... Open

feature request protoc wait for user action

Difficulty 4/5 3-5 days Newbie friendliness 48/100

protocolbuffers/protobuf#28258 · 2 comments · Opened Jun 29, 2026
Bazel: "`crates` is in a non-root module but has no lockfile" since rules_rust 0.71.1 Open

bug rust

protocolbuffers/protobuf#28224 · 1 reaction · 1 assignee · Opened Jun 26, 2026
Protobuf `ParseFromArray` takes an `int size` where negative values are UB Open

bug help wanted

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

protocolbuffers/protobuf#28065 · 8 comments · Opened Jun 17, 2026
py_proto_library rule not using prebuilt protoc Open

bazel bug python

protocolbuffers/protobuf#28028 · 3 comments · 1 reaction · 1 assignee · Opened Jun 16, 2026
Out-of-bounds Read via Negative Size Parameter in MessageLite::ParseFromArray Open

bug keep open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

protocolbuffers/protobuf#27949 · 6 comments · Opened Jun 12, 2026
protoc v35.1 fails to build on FreeBSD 15.0 and LLVM/Clang 19.1.7 with libc++ Open

bug inactive untriaged

Difficulty 4/5 3-5 days Newbie friendliness 48/100

protocolbuffers/protobuf#27942 · 6 comments · Opened Jun 12, 2026

A short digest of beginner-friendly GitHub issues.