52 matches found
EUVD-2026-110320
Autobahn Python: permessage-brotli inflates a whole frame before maxMessagePayloadSize is checked incomplete fix of GHSA-hxp9-w8x3-p566...
GHSA-PJH6-C8MG-3X7M Autobahn Python: permessage-brotli inflates a whole frame before maxMessagePayloadSize is checked (incomplete fix of GHSA-hxp9-w8x3-p566)
Summary permessage-brotli inflates each frame fully before checking maxMessagePayloadSize, so one 421-byte frame makes the server allocate about 545 MiB even with a 1 MiB message limit brotli expands about 1,000,000:1. Any unauthenticated client can exhaust server memory this way on servers that...
Autobahn Python: permessage-brotli inflates a whole frame before maxMessagePayloadSize is checked (incomplete fix of GHSA-hxp9-w8x3-p566)
Summary permessage-brotli inflates each frame fully before checking maxMessagePayloadSize, so one 421-byte frame makes the server allocate about 545 MiB even with a 1 MiB message limit brotli expands about 1,000,000:1. Any unauthenticated client can exhaust server memory this way on servers that...
CVE-2026-116579
Autobahn Python is a WebSocket and WAMP implementation for Python that supports Twisted and asyncio. From 26.7.1 until 26.10.1, PerMessageBrotli.decompressmessagedata in compressbrotli.py calls the Brotli decompressor without an output limit and checks maxMessagePayloadSize only after a complete...
CVE-2026-116579
Autobahn Python is a WebSocket and WAMP implementation for Python that supports Twisted and asyncio. From 26.7.1 until 26.10.1, PerMessageBrotli.decompressmessagedata in compressbrotli.py calls the Brotli decompressor without an output limit and checks maxMessagePayloadSize only after a complete...
CVE-2026-116579
Autobahn Python is a WebSocket and WAMP implementation for Python that supports Twisted and asyncio. From 26.7.1 until 26.10.1, PerMessageBrotli.decompressmessagedata in compressbrotli.py calls the Brotli decompressor without an output limit and checks maxMessagePayloadSize only after a complete...
UBUNTU-CVE-2026-116579
Autobahn Python is a WebSocket and WAMP implementation for Python that supports Twisted and asyncio. From 26.7.1 until 26.10.1, PerMessageBrotli.decompressmessagedata in compressbrotli.py calls the Brotli decompressor without an output limit and checks maxMessagePayloadSize only after a complete...
CVE-2026-116579 Autobahn Python: permessage-brotli inflates a whole frame before maxMessagePayloadSize is checked (incomplete fix of GHSA-hxp9-w8x3-p566)
Autobahn Python is a WebSocket and WAMP implementation for Python that supports Twisted and asyncio. From 26.7.1 until 26.10.1, PerMessageBrotli.decompressmessagedata in compressbrotli.py calls the Brotli decompressor without an output limit and checks maxMessagePayloadSize only after a complete...
CVE-2026-116579 Autobahn Python: permessage-brotli inflates a whole frame before maxMessagePayloadSize is checked (incomplete fix of GHSA-hxp9-w8x3-p566)
Autobahn Python is a WebSocket and WAMP implementation for Python that supports Twisted and asyncio. From 26.7.1 until 26.10.1, PerMessageBrotli.decompressmessagedata in compressbrotli.py calls the Brotli decompressor without an output limit and checks maxMessagePayloadSize only after a complete...
CVE-2026-116579 Autobahn Python: permessage-brotli inflates a whole frame before maxMessagePayloadSize is checked (incomplete fix of GHSA-hxp9-w8x3-p566)
Autobahn Python is a WebSocket and WAMP implementation for Python that supports Twisted and asyncio. From 26.7.1 until 26.10.1, PerMessageBrotli.decompressmessagedata in compressbrotli.py calls the Brotli decompressor without an output limit and checks maxMessagePayloadSize only after a complete...
CVE-2026-116579
Autobahn Python is a WebSocket and WAMP implementation for Python that supports Twisted and asyncio. From 26.7.1 until 26.10.1, PerMessageBrotli.decompressmessagedata in compressbrotli.py calls the Brotli decompressor without an output limit and checks maxMessagePayloadSize only after a complete...
CVE-2026-116579
The Autobahn Python WebSocket and WAMP implementation for Python (versions 26.7.1 to 26.10.1 ) contains a vulnerability in the PerMessageBrotli.decompress_message_data function within compress_brotli.py . The root cause is that the Brotli decompressor is called without an output limit, and the ma...
PT-2026-125385
Name of the Vulnerable Software and Affected Versions Autobahn Python versions 26.7.1 through 26.10.0 Description An unauthenticated WebSocket client can trigger a memory-exhaustion denial of service on servers that enable the opt-in permessage-brotli feature. This occurs because the decompress...
Autobahn Python permessage-deflate bypasses maxMessagePayloadSize after inflation
SummaryAutobahn Python enforces maxMessagePayloadSize against the compressed WebSocket frame length before permessage-deflate inflation, then delivers the inflated message to application callbacks without a second size check. A client frame that is only 22 compressed bytes can inflate to 4096 byt...
Autobahn Python permessage-deflate bypasses maxMessagePayloadSize after inflation
SummaryAutobahn Python enforces maxMessagePayloadSize against the compressed WebSocket frame length before permessage-deflate inflation, then delivers the inflated message to application callbacks without a second size check. A client frame that is only 22 compressed bytes can inflate to 4096 byt...
PYSEC-2026-4027 Autobahn Python permessage-deflate bypasses maxMessagePayloadSize after inflation
Summary Autobahn Python enforces maxMessagePayloadSize against the compressed WebSocket frame length before permessage-deflate inflation, then delivers the inflated message to application callbacks without a second size check. A client frame that is only 22 compressed bytes can inflate to 4096...
PYSEC-2026-4031 Autobahn Python permessage-deflate bypasses maxMessagePayloadSize after inflation
Summary Autobahn Python enforces maxMessagePayloadSize against the compressed WebSocket frame length before permessage-deflate inflation, then delivers the inflated message to application callbacks without a second size check. A client frame that is only 22 compressed bytes can inflate to 4096...
CVE-2026-77528
creationtimestamp| type| source ---|---|--- 2026-09-22 22:35:23+00:00| published-proof-of-concept| https://github.com/crossbario/autobahn-python/security/advisories/GHSA-hxp9-w8x3-p566...
GHSA-HXP9-W8X3-P566 Autobahn Python permessage-deflate bypasses maxMessagePayloadSize after inflation
Summary Autobahn Python enforces maxMessagePayloadSize against the compressed WebSocket frame length before permessage-deflate inflation, then delivers the inflated message to application callbacks without a second size check. A client frame that is only 22 compressed bytes can inflate to 4096...