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protocolbuffers

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protobuf
Protocol Buffers - Google's data interchange format

C++ · 72046 stars
protobuf-javascript

JavaScript · 471 stars
txtpbfmt
txtpbfmt parses, edits and formats text proto files in a way that preserves comments.

Go · 131 stars
protocolbuffers.github.io

HTML · 69 stars
protobuf-ci
A shared repository for Protobuf CI actions

10 stars

Beginner friendly Everything

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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
Java JSON serializer emits invalid extension keys by default Open

bug java json keep open

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

protocolbuffers/protobuf#27499 · Opened May 20, 2026
protoc version integrity check always fails with tarball flavor of the release Open

bug inactive

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

protocolbuffers/protobuf#27460 · 4 comments · Opened May 19, 2026
Protobuf library requires bash.exe / WSL, seemingly unnecessarily Open

bug help wanted

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

protocolbuffers/protobuf#27307 · 2 comments · Opened May 9, 2026
Performance: Optimize Varint Encoding/Decoding with Loop Unrolling (and potentially SVE2) Open

c++ feature request keep open

protocolbuffers/protobuf#26931 · 4 comments · 1 reaction · 1 assignee · Opened Apr 16, 2026
[Fuzzing] NULL-pointer dereference: upb_MiniTableEnum_CheckValue crash via unlinked closed-enum field in upb_Decode Open

protocolbuffers/protobuf#26857 · 1 comment · 1 assignee · Opened Apr 12, 2026
PHP Extension - Constructor cannot convert optional to string Open

bug php

protocolbuffers/protobuf#26824 · 1 comment · 1 reaction · 1 assignee · Opened Apr 10, 2026
Protobuffer support for postgres: pgproto Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

protocolbuffers/protocolbuffers.github.io#304 · Opened Apr 1, 2026
Umbrella issue: protobuf Python C Extension Analysis Report Open

bug untriaged

protocolbuffers/protobuf#26596 · 4 comments · 1 assignee · Opened Mar 26, 2026
Protobuf FieldMask is non-recursive structure at parse time (no depth limit to enforce) but the FieldMaskTree handling of it is unconstrained recursive algorithm Open

bug keep open

protocolbuffers/protobuf#26489 · 9 comments · 1 assignee · Opened Mar 20, 2026
Recursion Depth Limit: Can reach depth 200 via 100 nested unknown groups beneath a depth=100 messageset item Open

bug help wanted

Difficulty 4/5 3-5 days Newbie friendliness 42/100

protocolbuffers/protobuf#26437 · 3 comments · Opened Mar 18, 2026
Language Guide (proto 3) Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

protocolbuffers/protocolbuffers.github.io#303 · Opened Mar 10, 2026
Rust: automatically source the matching protoc-prebuilt in build.rs (at least opt-in behavior). Open

keep open rust

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

protocolbuffers/protobuf#26271 · 2 comments · Opened Mar 8, 2026
PHP: C extension has undocumented "append" function that has no package parity. Open

help wanted

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

protocolbuffers/protobuf#26188 · 2 comments · Opened Mar 3, 2026
Support reserved names in ProtoJSON deserialisers Open

enhancement keep open

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

protocolbuffers/protobuf#26123 · 1 comment · Opened Feb 27, 2026
protobuf-java-util JsonFormat: Missing checks on BigDecimal JSON exponent consumes a large amount of memory Open

java keep open

protocolbuffers/protobuf#26032 · 4 comments · 1 reaction · 1 assignee · Opened Feb 21, 2026
Language Guide (editions) Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

protocolbuffers/protocolbuffers.github.io#301 · Opened Feb 13, 2026
Protocol Buffers Well-Known Types Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

protocolbuffers/protocolbuffers.github.io#300 · Opened Feb 13, 2026
Protocol Buffers Well-Known Types Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

protocolbuffers/protocolbuffers.github.io#299 · Opened Feb 13, 2026
New field types in IDL Open

enhancement keep open

protocolbuffers/protobuf#25159 · 11 comments · 4 reactions · 4 assignees · Opened Jan 5, 2026
Encoding Repeated Elements Discussion Wrong Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

protocolbuffers/protocolbuffers.github.io#293 · 1 comment · Opened Dec 31, 2025
FieldMask in ProtoJSON fails to parse from "null" Open

keep open

protocolbuffers/protobuf#24937 · 6 comments · 1 assignee · Opened Dec 19, 2025
Multiple CWE's in protobuf after SAST analysis by PVS-Studio Open

help wanted

Difficulty 5/5 Over a week Newbie friendliness 25/100

protocolbuffers/protobuf#24882 · 2 comments · Opened Dec 15, 2025
CMake find_package requires CONFIG mode Open

cmake keep open

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

protocolbuffers/protobuf#24771 · Opened Dec 9, 2025
ProtoJSON Format doc page does not describe how to generate JSON Open

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

protocolbuffers/protocolbuffers.github.io#289 · Opened Dec 5, 2025
pkg-config can not resolve dependencies Open

cmake help wanted

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

protocolbuffers/protobuf#24610 · 3 comments · Opened Nov 26, 2025
C++ API docs out of date? Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

protocolbuffers/protocolbuffers.github.io#287 · Opened Nov 18, 2025
Message methods not defined as positional arg only Open

enhancement keep open python upb

protocolbuffers/protobuf#24446 · 8 comments · 1 assignee · Opened Nov 13, 2025
PHP Extension - Segmentation fault when serialize() is called on a protobuf message Open

help wanted

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

protocolbuffers/protobuf#24369 · 5 comments · 1 reaction · Opened Nov 8, 2025
Protocol Buffer MIME Types hasn't exist in Internet Assigned Numbers Authority (IANA) Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

protocolbuffers/protocolbuffers.github.io#285 · Opened Nov 4, 2025
[Python] Potential memory leak Open

help wanted python

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

protocolbuffers/protobuf#24257 · 4 comments · Opened Nov 3, 2025
Bazel: Protobuf v33 (python) requires @system_python Open

bazel python

protocolbuffers/protobuf#24084 · 20 comments · 7 reactions · 2 assignees · Opened Oct 20, 2025
Language Guide (proto 3) Open

Difficulty 4/5 3-5 days Newbie friendliness 15/100

protocolbuffers/protocolbuffers.github.io#284 · Opened Oct 18, 2025
Google.Protobuf NuGet package is not deterministic Open

keep open

protocolbuffers/protobuf#24013 · 10 comments · 1 assignee · Opened Oct 16, 2025
bug: CodedInputStream.newInstance(List) with an empty bytebuffer produces an error Open

help wanted java

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

protocolbuffers/protobuf#23957 · 4 comments · Opened Oct 14, 2025
[python] Message constructor argument enum typing Open

help wanted python

protocolbuffers/protobuf#23670 · 3 comments · 1 reaction · 1 assignee · Opened Sep 27, 2025
Support for ES Modules (import/export) in protoc --js_out Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

protocolbuffers/protobuf-javascript#248 · 1 comment · 13 reactions · Opened Sep 23, 2025
Encoding: Inconsistent example for packed repeated fields in Test4 message Open

protocolbuffers/protocolbuffers.github.io#282 · 1 comment · 1 assignee · Opened Sep 21, 2025
Protocol Buffers Well-Known Types: missing import statement guidance Open

protocolbuffers/protocolbuffers.github.io#280 · 1 assignee · Opened Sep 14, 2025
Warning in repeated_ptr_field.h about conversion from `size_t` to `int` causes compiler error Open

help wanted

protocolbuffers/protobuf#23248 · 1 comment · 1 assignee · Opened Aug 27, 2025
Go Generated Code Guide (Open) Open

protocolbuffers/protocolbuffers.github.io#274 · 1 comment · 1 assignee · Opened Aug 21, 2025
Support free-threaded CPython (3.13t) Open

keep open python

protocolbuffers/protobuf#23158 · 4 comments · 4 reactions · 2 assignees · Opened Aug 14, 2025
Incomprehensible example for `packed` encoding Open

protocolbuffers/protocolbuffers.github.io#267 · 1 assignee · Opened Aug 6, 2025
Check for wrapper types in C# code gen should be case insensitive Open

c# help wanted

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

protocolbuffers/protobuf#22744 · 3 comments · Opened Jul 23, 2025
Invalid Proto3 syntax example in `Protobuf Editions > Overview#Proto3 syntax` Open

protocolbuffers/protocolbuffers.github.io#265 · 1 assignee · Opened Jul 15, 2025
C++ Reference Open

protocolbuffers/protocolbuffers.github.io#261 · 2 comments · 1 assignee · Opened Jun 23, 2025

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