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[C++][Parquet] Unsanitized usage of uint32_t lengths accross Parquet metadata reads

Component: C++

Component: Parquet

Type: bug

Status: Open.

#50971 In apache/arrow;

· pitrou opened on Aug 24, 2026

[C++][Parquet] "Keep redacted metadata version for old readers"

Component: C++

Component: Parquet

Type: bug

Status: Open.

#50969 In apache/arrow;

· pitrou opened on Aug 24, 2026

[Python][Annotations] Should structure of annotations reflect structure of PyArrow at runtime

Component: Python

Type: enhancement

Status: Open.

#50968 In apache/arrow;

· rok opened on Aug 24, 2026

[C++] Allow CSV reader to ignore extra columns in rows with more columns

Component: C++

Type: enhancement

Status: Open.

#50967 In apache/arrow;

· HuaHuaY opened on Aug 24, 2026

[C++] Provided more options in CSV reader's ParseOptions and ReadOptions

Component: C++

Type: enhancement

Status: Open.

#50966 In apache/arrow;

· HuaHuaY opened on Aug 24, 2026

[C++] Out-of-bounds read in DecimalRescale for a scale delta larger than kMaxScale

Component: C++

Status: Open.

#50964 In apache/arrow;

· Arawoof06 opened on Aug 24, 2026

[Python] concat_tables silently ignores unrecognised keyword arguments, including unify_schemas

Component: Python

Status: Open.

#50957 In apache/arrow;

· slachiewicz opened on Aug 23, 2026

[C++] Replace RapidJSON with simdjson in JSON chunker

Component: C++

Type: enhancement

Status: Open.

#50944 In apache/arrow;

· Reranko05 opened on Aug 21, 2026

[CI][Packaging][Python] Python 3.15.0.rc*: add testing against Pandas nightly builds

Component: Continuous Integration

Component: Python

Type: enhancement

Status: Open.

#50943 In apache/arrow;

· paultiq opened on Aug 21, 2026

·  

26.0.0

[R] CRAN packaging checklist for version 25.0.1

Status: Open.

#50941 In apache/arrow;

· thisisnic opened on Aug 21, 2026

[C++][Integration] Replace RapidJSON with simdjson

Component: C++

Type: enhancement

Status: Open.

#50936 In apache/arrow;

· Reranko05 opened on Aug 21, 2026

[C++] Fix shellcheck errors in cpp/build-support/run-test.sh

Component: C++

Type: enhancement

Status: Open.

#50934 In apache/arrow;

· hiroyuki-sato opened on Aug 21, 2026