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Vulnerability Details :

CVE-2026-54466

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-17 Jul, 2026 | 20:53
Updated At-17 Jul, 2026 | 20:53
Rejected At-
Credits

websocket-driver: Message corruption via abuse of protocol length headers

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.

Vendors
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Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
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N/A
No data available for selected date range
Percentile
Latest Percentile
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N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:17 Jul, 2026 | 20:53
Updated At:17 Jul, 2026 | 20:53
Rejected At:
▼CVE Numbering Authority (CNA)
websocket-driver: Message corruption via abuse of protocol length headers

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.

Affected Products
Vendor
faye
Product
websocket-driver-node
Versions
Affected
  • < 0.7.5
Problem Types
TypeCWE IDDescription
CWECWE-130CWE-130: Improper Handling of Length Parameter Inconsistency
Type: CWE
CWE ID: CWE-130
Description: CWE-130: Improper Handling of Length Parameter Inconsistency
Metrics
VersionBase scoreBase severityVector
4.09.2CRITICAL
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
Version: 4.0
Base score: 9.2
Base severity: CRITICAL
Vector:
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/faye/websocket-driver-node/security/advisories/GHSA-xv26-6w52-cph6
x_refsource_CONFIRM
https://github.com/faye/websocket-driver-node/commit/5b197ca874dab58e96cacad8a3c256797d804680
x_refsource_MISC
Hyperlink: https://github.com/faye/websocket-driver-node/security/advisories/GHSA-xv26-6w52-cph6
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/faye/websocket-driver-node/commit/5b197ca874dab58e96cacad8a3c256797d804680
Resource:
x_refsource_MISC
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:17 Jul, 2026 | 21:17
Updated At:17 Jul, 2026 | 21:17

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.09.2CRITICAL
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 4.0
Base score: 9.2
Base severity: CRITICAL
Vector:
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-130Primarysecurity-advisories@github.com
CWE ID: CWE-130
Type: Primary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/faye/websocket-driver-node/commit/5b197ca874dab58e96cacad8a3c256797d804680security-advisories@github.com
N/A
https://github.com/faye/websocket-driver-node/security/advisories/GHSA-xv26-6w52-cph6security-advisories@github.com
N/A
Hyperlink: https://github.com/faye/websocket-driver-node/commit/5b197ca874dab58e96cacad8a3c256797d804680
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/faye/websocket-driver-node/security/advisories/GHSA-xv26-6w52-cph6
Source: security-advisories@github.com
Resource: N/A

Change History

0
Information is not available yet

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