| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-hxp9-w8x3-p566 | Autobahn Python permessage-deflate bypasses maxMessagePayloadSize after inflation |
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Sun, 20 Sep 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Sat, 19 Sep 2026 23:00:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Crossbario
Crossbario autobahn-python |
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| Vendors & Products |
Crossbario
Crossbario autobahn-python |
Fri, 18 Sep 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Autobahn Python is a WebSocket and WAMP implementation for Python that supports Twisted and asyncio. Prior to 26.7.1, WebSocket endpoints that accept permessage-deflate and rely on maxMessagePayloadSize enforce that limit against the compressed frame length before inflation but do not recheck the decompressed message size before delivery. A remote unauthenticated client can send a valid compressed frame below the configured wire-size limit that expands beyond the application message limit, causing oversized data to be allocated, joined, validated, and passed to application callbacks. This can create resource-exhaustion pressure, but the advisory does not establish confidentiality or integrity impact. This issue is fixed in version 26.7.1. | |
| Title | Autobahn Python permessage-deflate bypasses maxMessagePayloadSize after inflation | |
| Weaknesses | CWE-409 CWE-770 |
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| References |
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| Metrics |
cvssV3_1
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Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-19T14:11:38.071Z
Reserved: 2026-08-20T20:23:02.508Z
Link: CVE-2026-77528
Updated: 2026-09-19T14:04:25.831Z
Status : Received
Published: 2026-09-18T20:17:22.830
Modified: 2026-09-19T15:17:02.063
Link: CVE-2026-77528
No data.
OpenCVE Enrichment
Updated: 2026-09-19T22:28:26Z
Github GHSA