Out-of-bounds write in the brotlicffi decoder ("Node2Shell") also affects the PyPI Brotli package

CVE-2026-111497 "Node2Shell" is an out-of-bounds write CWE-787 in Google'sBrotli decoder c/dec/decode.c. DecodeBlockTypeAndLength returns an ambiguousvalue for an invalid block switch, and the fast decode path discards itCWE-252, unchecked return value, so a crafted Brotli stream makes the...

PYSEC-2026-4323 Out-of-bounds write in the brotlicffi decoder ("Node2Shell") also affects the PyPI Brotli package

CVE-2026-111497 "Node2Shell" is an out-of-bounds write CWE-787 in Google's Brotli decoder c/dec/decode.c. DecodeBlockTypeAndLength returns an ambiguous value for an invalid block switch, and the fast decode path discards it CWE-252, unchecked return value, so a crafted Brotli stream makes the...

Decompression Bomb

Overview urllib3 is a HTTP library with thread-safe connection pooling, file post, and more. Affected versions of this package are vulnerable to Decompression Bomb either in HTTPResponse.read when Brotli is in use, or when HTTPResponse.drainconn is called after partial decompression has begun. An...

Allocation of Resources Without Limits or Throttling

Overview brotlicffi is a Python CFFI bindings to the Brotli library Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling due to missing limits on decompressed output size in the Decompressor.decompress and Decompressor.process methods. These...

ffun (>=1.5.5, <=1.20.7), morrisseau-cleaner (>=0.8.11, <=0.11.1) +2 more potentially affected by unknown CVE via brotlicffi (>=1.0.9.2, <=1.1.0.0)

brotlicffi PYPI version =1.0.9.2, =1.5.5, =0.8.11, =2.10.12, =2.13.7 - podloot 0.1.0 Source cves: unknown CVE Source advisory: SNYK:PYTHON-BROTLICFFI-14172734...