CVE-2026-54466

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Source
https://cve.org/CVERecord?id=CVE-2026-54466
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54466.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54466
Aliases
Downstream
Related
Published
2026-07-17T20:53:24.769Z
Modified
2026-07-22T05:29:48.355390662Z
Severity
  • 9.2 (Critical) CVSS_V4 - 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 CVSS Calculator
Summary
websocket-driver: Message corruption via abuse of protocol length headers
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54466.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-130"
    ]
}
References

Affected packages

Git / github.com/faye/websocket-driver-node

Affected ranges

Type
GIT
Repo
https://github.com/faye/websocket-driver-node
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
5b197ca874dab58e96cacad8a3c256797d804680
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.7.5"
        }
    ]
}

Affected versions

0.*
0.1.0
0.2.0
0.2.1
0.2.2
0.3.0
0.3.1
0.3.2
0.3.3
0.3.4
0.3.5
0.3.6
0.4.0
0.5.0
0.5.1
0.5.2
0.5.3
0.5.4
0.6.0
0.6.1
0.6.2
0.6.3
0.6.4
0.6.5
0.7.0
0.7.1
0.7.2
0.7.3
0.7.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54466.json"