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Protocol Buffers
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Protocol buffers are Google's language-neutral, platform-neutral, extensible mechanism for serializing structured data.
Documentation:
https://develop
ers.google.com/protocol-
buffers/
Issue tracker:
https://github.com/
protocolbuffers/protobuf
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Sandy Zhang
11/13/25
[Announcement] Protocol Buffers Version 33.1 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
unread,
[Announcement] Protocol Buffers Version 33.1 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
11/13/25
Viktor Vorobev
,
Em Rauch
6
11/3/25
Potential Python memory leak
Here is the link to the created issue for the newer generations: https://github.com/protocolbuffers/
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Potential Python memory leak
Here is the link to the created issue for the newer generations: https://github.com/protocolbuffers/
11/3/25
Berend Lange
,
Em Rauch
3
11/3/25
Protobuf with Rust and Bazel
I opened an issue on github. I was trying to use the new protoc-gen-rust-grpc plugin in bazel, should
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Protobuf with Rust and Bazel
I opened an issue on github. I was trying to use the new protoc-gen-rust-grpc plugin in bazel, should
11/3/25
Markus Appel
,
Em Rauch
2
10/31/25
Removing System.Memory for Unity plugin
Unfortunately, I think we aren't likely to make nontrivial changes to target that environment (we
unread,
Removing System.Memory for Unity plugin
Unfortunately, I think we aren't likely to make nontrivial changes to target that environment (we
10/31/25
James F. Bellinger
,
Samuel Benzaquen
2
10/17/25
Binary protocol Wire Type 7, proposal to use for padding
Thank you for the proposal. In the past, we explored techniques to add padding for alignment (eg to
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Binary protocol Wire Type 7, proposal to use for padding
Thank you for the proposal. In the past, we explored techniques to add padding for alignment (eg to
10/17/25
Dennis Shao
, …
Em Rauch
3
10/17/25
[Announcement] Protocol Buffers Version 33.0 is Released!
Thanks for reaching out Adrian. This is an unfortunate quirk of our release process where the BCR
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[Announcement] Protocol Buffers Version 33.0 is Released!
Thanks for reaching out Adrian. This is an unfortunate quirk of our release process where the BCR
10/17/25
Mike Kruskal
10/9/25
[Announcement] Protocol Buffers Version 33.0-rc2 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
unread,
[Announcement] Protocol Buffers Version 33.0-rc2 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
10/9/25
Ondra Miksik
, …
Eric Salo
3
10/8/25
Prototiller release date
Apologies for the delay. We realized last year that prototiller needed to be rewritten and I have
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Prototiller release date
Apologies for the delay. We realized last year that prototiller needed to be rewritten and I have
10/8/25
Mike Kruskal
10/2/25
[Announcement] Protocol Buffers Version 33.0-rc1 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
unread,
[Announcement] Protocol Buffers Version 33.0-rc1 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
10/2/25
Marcin Lewandowski
, …
Em Rauch
7
10/2/25
How to properly do static linking within CMake project
Sorry about your difficulty here. Have you looked at our CMakeLists.txt example: https://github.com/
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How to properly do static linking within CMake project
Sorry about your difficulty here. Have you looked at our CMakeLists.txt example: https://github.com/
10/2/25
Petras Vestartas
,
Arjun Patel
3
9/25/25
crying in a small corner trying while trying to build C++ protobuf
@Arjun Patel this is the repository with CMakelists for v29, I could not manage to build for v32:
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crying in a small corner trying while trying to build C++ protobuf
@Arjun Patel this is the repository with CMakelists for v29, I could not manage to build for v32:
9/25/25
Machine Therapist
9/22/25
new tiny wrapper for protobuf c++ api
hey, i was playing around with the protobuf c++ api. to me it felt a bit verbose — lots of setters/
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new tiny wrapper for protobuf c++ api
hey, i was playing around with the protobuf c++ api. to me it felt a bit verbose — lots of setters/
9/22/25
Ranen Ghosh
,
Em Rauch
2
9/15/25
upb code generation
This looks correct, but I'll mention that upb's C code generation is not a supported API
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upb code generation
This looks correct, but I'll mention that upb's C code generation is not a supported API
9/15/25
Eric Salo
9/11/25
[Announcement] Protocol Buffers Version 32.1 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
unread,
[Announcement] Protocol Buffers Version 32.1 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
9/11/25
Lars Klein
9/11/25
python protobuf (upb) and subinterpreter support
Hi, we use python-protobuf in our python code that makes use of subinterpreters. We realized that the
unread,
python protobuf (upb) and subinterpreter support
Hi, we use python-protobuf in our python code that makes use of subinterpreters. We realized that the
9/11/25
Lars Persson
,
Em Rauch
2
9/5/25
Protobuf with Java
Java requires that a file with a given package be in a directory structure which matches the package.
unread,
Protobuf with Java
Java requires that a file with a given package be in a directory structure which matches the package.
9/5/25
Sumit Bhoir
8/29/25
when using protobufs in C++ facing runtime crash in ShortDebugString and DebugString
Hi, I have created static lib proto_gen.a from all proto files that im using in my code base. im
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when using protobufs in C++ facing runtime crash in ShortDebugString and DebugString
Hi, I have created static lib proto_gen.a from all proto files that im using in my code base. im
8/29/25
Arnab Joardar
8/25/25
Conda: Unable to find libupb, etc
Hello everyone, When attempting to build a ROS package (Noetic) on Conda, I run into the following
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Conda: Unable to find libupb, etc
Hello everyone, When attempting to build a ROS package (Noetic) on Conda, I run into the following
8/25/25
Jie Luo
8/14/25
[Announcement] Protocol Buffers Version 32.0 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
unread,
[Announcement] Protocol Buffers Version 32.0 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
8/14/25
Somak Dutta
,
Em Rauch
3
8/12/25
Seeking clarification on vulnerability fixes done for DOS https://github.com/advisories/GHSA-g5ww-5jh7-63cx
Thank you Em, appreciate your quick responses always. Regarding, It appears that it won't return
unread,
Seeking clarification on vulnerability fixes done for DOS https://github.com/advisories/GHSA-g5ww-5jh7-63cx
Thank you Em, appreciate your quick responses always. Regarding, It appears that it won't return
8/12/25
Itamar Katz
, …
Em Rauch
3
8/12/25
The "1 MB message size rule of thumb" in the docs
That 1MB rule of thumb is a guideline about the total wire serialized size of the top-level message.
unread,
The "1 MB message size rule of thumb" in the docs
That 1MB rule of thumb is a guideline about the total wire serialized size of the top-level message.
8/12/25
Andrei Pangratie
,
Em Rauch
3
8/5/25
Packed field with protoscope
That makes sense, thanks. On Tuesday, August 5, 2025 at 4:06:59 PM UTC+3 Em Rauch wrote: Packed
unread,
Packed field with protoscope
That makes sense, thanks. On Tuesday, August 5, 2025 at 4:06:59 PM UTC+3 Em Rauch wrote: Packed
8/5/25
Jerry Berg
8/5/25
[Announcement] Protocol Buffers Version 32.0-rc2 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
unread,
[Announcement] Protocol Buffers Version 32.0-rc2 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
8/5/25
Saptarshi
, …
Paul Kotlyar
10
8/2/25
A quick question regarding writing protobuf message to Stream preceded by Header
I solved this problem https://medium.com/@unclepaul84/efficiently-reading-and-writing-very-large-
unread,
A quick question regarding writing protobuf message to Stream preceded by Header
I solved this problem https://medium.com/@unclepaul84/efficiently-reading-and-writing-very-large-
8/2/25
David Castro
7/25/25
Edition 2024 now available
Protobuf Edition 2024 was released in the v32 RC1 release. Documentation on Edition 2024 is published
unread,
Edition 2024 now available
Protobuf Edition 2024 was released in the v32 RC1 release. Documentation on Edition 2024 is published
7/25/25
Adam Cozzette
7/24/25
[Announcement] Protocol Buffers Version 32.0-rc1 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
unread,
[Announcement] Protocol Buffers Version 32.0-rc1 is Released!
You can view the release and complete release notes on GitHub. If you experience any issues with the
7/24/25
Somak Dutta
,
Em Rauch
3
7/23/25
Vulnerability Fix Explanation for https://github.com/advisories/GHSA-4gg5-vx3j-xwc7
Thank you Em appreciate the response. I understand and totally agree, providing a valid reproduction
unread,
Vulnerability Fix Explanation for https://github.com/advisories/GHSA-4gg5-vx3j-xwc7
Thank you Em appreciate the response. I understand and totally agree, providing a valid reproduction
7/23/25
Somak Dutta
, …
Em Rauch
5
7/13/25
Size limits for Proto Messages https://protobuf.dev/programming-guides/proto-limits/
Thank Em Rauch for your response. Your suspicion on attack surface actually piqued my interest and I
unread,
Size limits for Proto Messages https://protobuf.dev/programming-guides/proto-limits/
Thank Em Rauch for your response. Your suspicion on attack surface actually piqued my interest and I
7/13/25
Somak Dutta
,
Em Rauch
2
7/7/25
Vulnerability GHSA-jwvw-v7c5-m82h in protobuf-java: Heap-based buffer overflow
Unfortunately a CVE from a decade ago and the 2.x lineage are both sufficiently ancient history that
unread,
Vulnerability GHSA-jwvw-v7c5-m82h in protobuf-java: Heap-based buffer overflow
Unfortunately a CVE from a decade ago and the 2.x lineage are both sufficiently ancient history that
7/7/25
X Dev
, …
Cassondra Foesch
4
7/4/25
Reflection for oneOf fields
I keep responding privately to people by accident. (I've been out of mailing lists too long.) 1.
unread,
Reflection for oneOf fields
I keep responding privately to people by accident. (I've been out of mailing lists too long.) 1.
7/4/25
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