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Weakness (CWE) CWE-409 Improper Handling of Highly Compressed Data (Data Amplification) 2 CWE-770 Allocation of Resources Without Limits or Throttling 2

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TI-2026-80681 CVE-2026-116579 · GHSA-pjh6-c8mg-3x7m

Memory exhaustion in Autobahn Python permessage-brotli decompression

Priority LOW 27

Autobahn Python is a WebSocket and WAMP implementation for Python that supports Twisted and asyncio.

CVSS 3.1MEDIUM 5.9· Network · No auth · No interaction · EPSS 0.00425 · Published 2026-10-26 · Partial fix · 26.10.1 CWE-409

TI-2026-54051 CVE-2026-77528 · GHSA-hxp9-w8x3-p566

Autobahn Python permessage-deflate bypasses maxMessagePayloadSize after inflation

Priority LOW 31

Autobahn Python is a WebSocket and WAMP implementation for Python that supports Twisted and asyncio.

CVSS 3.1MEDIUM 5.3· Network · No auth · No interaction · EPSS 0.00524 · Published 2026-09-18 · Fixed in 26.7.1 CWE-409

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