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[Security] Remote Denial of Service (DoS) via NULL Pointer Dereference in PyUpb_PyToUpbEnum

bug

untriagedauto added to all issues by default when created.auto added to all issues by default when created.

Status: Open.

#27106 In protocolbuffers/protobuf;

· dynapx opened on Apr 25, 2026

OOM in packed field decoders

bug

untriagedauto added to all issues by default when created.auto added to all issues by default when created.

Status: Open.

#27104 In protocolbuffers/protobuf;

· subbudvk opened on Apr 24, 2026

Null Pointer Dereference in EpsCopyOutputStream::EnableAliasing When Using Array-Only Constructor

bug

untriagedauto added to all issues by default when created.auto added to all issues by default when created.

Status: Open.

#27099 In protocolbuffers/protobuf;

· FuzzAnything-ORG opened on Apr 24, 2026

Unvalidated Negative buffer_size in GzipOutputStream::Init Causes Allocation-Size-Too-Big Crash

bug

untriagedauto added to all issues by default when created.auto added to all issues by default when created.

Status: Open.

#27097 In protocolbuffers/protobuf;

· FuzzAnything-ORG opened on Apr 24, 2026

Performance: Optimize Varint Encoding/Decoding with Loop Unrolling (and potentially SVE2)

feature request

untriagedauto added to all issues by default when created.auto added to all issues by default when created.

Status: Open.

#26931 In protocolbuffers/protobuf;

· liuyang-664 opened on Apr 16, 2026

[Fuzzing] NULL-pointer dereference: upb_MiniTableEnum_CheckValue crash via unlinked closed-enum field in upb_Decode

Status: Open.

#26857 In protocolbuffers/protobuf;

· parasol-aser opened on Apr 12, 2026

[C#] IndexOutOfRangeException instead of InvalidProtocolBufferException on truncated messages

bug

Status: Open.

#26856 In protocolbuffers/protobuf;

· pawlos opened on Apr 12, 2026

PHP Extension - Constructor cannot convert optional to string

bug

php

Status: Open.

#26824 In protocolbuffers/protobuf;

· FabioBatSilva opened on Apr 10, 2026

v29.6 wasn't published to the Bazel Central Registry

bug

Status: Open.

#26639 In protocolbuffers/protobuf;

· kersson opened on Mar 30, 2026

Umbrella issue: protobuf Python C Extension Analysis Report

bug

Status: Open.

#26596 In protocolbuffers/protobuf;

· devdanzin opened on Mar 26, 2026

Examples fail to build

bug

Status: Open.

#26531 In protocolbuffers/protobuf;

· rossburton opened on Mar 23, 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

bug

Status: Open.

#26489 In protocolbuffers/protobuf;

· VenkatKwest opened on Mar 20, 2026