CVE-2026-54466 (GCVE-0-2026-54466)

Vulnerability from cvelistv5 – Published: 2026-07-17 20:53 – Updated: 2026-07-20 19:11
VLAI
Title
websocket-driver: Message corruption via abuse of protocol length headers
Summary
websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.7.5, the frame format in draft versions of the WebSocket protocol includes a length header that allows an arbitrarily large integer to be encoded as a sequence of bytes with the high bit set. By sending an indefinite sequence of bytes with values 0x80 or above, a client can make the server parse these bytes into an ever-growing integer in lib/websocket/driver/draft75.js; because JavaScript numbers are 64-bit floating point values, this number will eventually lose precision and lead to the subsequent payload being parsed incorrectly. This issue is fixed in version 0.7.5.
Severity
9.2 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 19:01 UTC
CWE
  • CWE-130 - Improper Handling of Length Parameter Inconsistency
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7958 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
faye websocket-driver-node Affected: < 0.7.5
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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