GHSA-mp7j-qc5w-4988 - Vulnerability details

6.3/10

CVSS 4.0

GHSA-mp7j-qc5w-4988

resolved Published 2026-07-15 Updated 2026-07-15

GitHub Advisory

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Vulnerability Data from Dependency-Track

Affected versions

No fix yet in 5.7, 5.6, 5.5, 5.4

Score

6.3 CVSS 4.0 GITHUB CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

Description

### Impact If this library is used in tandem with the `permessage-deflate` extension, a WebSocket server or client can be made to accept messages that are larger than the configured maximum message size. This is because this limit is checked against the message frames' length headers, which give the size of the compressed data, not the size after decompression. This can lead to applications accepting larger messages than expected and exceeding their intended resource usage. ### Patches The issue has been patched in version 0.7.5, by checking the length of messages after they are processed by incoming extensions. All users should upgrade to this version. ### Workarounds No known workarounds exist. ### Acknowledgements This issue was discovered and reported by Pranjali Thakur, DepthFirst Security Research Team.

Same vulnerability as

CVE-2026-54490 resolved according to EUVD-2026-45336

Analysis Read only

State

Justification

Recommandation

Workaround

The analysis can only be edited by the BlueMind security teams: log in.

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