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8 vulnerabilities by ws_project
CVE-2026-45736 (GCVE-0-2026-45736)
Vulnerability from nvd – Published: 2026-05-15 14:53 – Updated: 2026-05-16 01:09
VLAI
Title
ws: Uninitialized memory disclosure
Summary
ws is an open source WebSocket client and server for Node.js. Prior to 8.20.1, the websocket.close() implementation is vulnerable to uninitialized memory disclosure when a TypedArray is passed as the reason argument. This vulnerability is fixed in 8.20.1.
Severity
4.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-908 - Use of Uninitialized Resource
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/websockets/ws/security/advisor… | x_refsource_CONFIRM |
| https://github.com/websockets/ws/commit/c0327ec15… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| websockets | ws |
Affected:
>= 8.0.0, < 8.20.1
|
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CVE-2021-32640 (GCVE-0-2021-32640)
Vulnerability from nvd – Published: 2021-05-25 18:25 – Updated: 2024-08-03 23:25
VLAI
Title
ReDoS in Sec-Websocket-Protocol header
Summary
ws is an open source WebSocket client and server library for Node.js. A specially crafted value of the `Sec-Websocket-Protocol` header can be used to significantly slow down a ws server. The vulnerability has been fixed in ws@7.4.6 (https://github.com/websockets/ws/commit/00c425ec77993773d823f018f64a5c44e17023ff). In vulnerable versions of ws, the issue can be mitigated by reducing the maximum allowed length of the request headers using the [`--max-http-header-size=size`](https://nodejs.org/api/cli.html#cli_max_http_header_size_size) and/or the [`maxHeaderSize`](https://nodejs.org/api/http.html#http_http_createserver_options_requestlistener) options.
Severity
5.3 (Medium)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/websockets/ws/security/advisor… | x_refsource_CONFIRM |
| https://github.com/websockets/ws/commit/00c425ec7… | x_refsource_MISC |
| https://lists.apache.org/thread.html/rdfa7b6253c4… | mailing-listx_refsource_MLIST |
| https://security.netapp.com/advisory/ntap-2021070… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| websockets | ws |
Affected:
>= 5.0.0 <= 7.4.5
|
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CVE-2016-10542 (GCVE-0-2016-10542)
Vulnerability from nvd – Published: 2018-05-31 20:00 – Updated: 2024-09-17 04:03
VLAI
Summary
ws is a "simple to use, blazing fast and thoroughly tested websocket client, server and console for node.js, up-to-date against RFC-6455". By sending an overly long websocket payload to a `ws` server, it is possible to crash the node process. This affects ws 1.1.0 and earlier.
Severity
No CVSS data available.
CWE
- CWE-400 - Denial of Service (CWE-400)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/nodejs/node/issues/7388 | x_refsource_MISC |
| https://nodesecurity.io/advisories/120 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HackerOne | ws node module |
Affected:
<=1.1.0
|
Date Public
2018-04-26 00:00
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CVE-2016-10518 (GCVE-0-2016-10518)
Vulnerability from nvd – Published: 2018-05-31 20:00 – Updated: 2024-09-17 02:57
VLAI
Summary
A vulnerability was found in the ping functionality of the ws module before 1.0.0 which allowed clients to allocate memory by sending a ping frame. The ping functionality by default responds with a pong frame and the previously given payload of the ping frame. This is exactly what you expect, but internally ws always transforms all data that we need to send to a Buffer instance and that is where the vulnerability existed. ws didn't do any checks for the type of data it was sending. With buffers in node when you allocate it when a number instead of a string it will allocate the amount of bytes.
Severity
No CVSS data available.
CWE
- CWE-201 - Information Exposure Through Sent Data (CWE-201)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/websockets/ws/releases/tag/1.0.1 | x_refsource_MISC |
| https://nodesecurity.io/advisories/67 | x_refsource_MISC |
| https://gist.github.com/c0nrad/e92005446c480707a74a | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HackerOne | ws node module |
Affected:
<= 1.0.0
|
Date Public
2018-04-26 00:00
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CVE-2026-45736 (GCVE-0-2026-45736)
Vulnerability from cvelistv5 – Published: 2026-05-15 14:53 – Updated: 2026-05-16 01:09
VLAI
Title
ws: Uninitialized memory disclosure
Summary
ws is an open source WebSocket client and server for Node.js. Prior to 8.20.1, the websocket.close() implementation is vulnerable to uninitialized memory disclosure when a TypedArray is passed as the reason argument. This vulnerability is fixed in 8.20.1.
Severity
4.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-908 - Use of Uninitialized Resource
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/websockets/ws/security/advisor… | x_refsource_CONFIRM |
| https://github.com/websockets/ws/commit/c0327ec15… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| websockets | ws |
Affected:
>= 8.0.0, < 8.20.1
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CVE-2021-32640 (GCVE-0-2021-32640)
Vulnerability from cvelistv5 – Published: 2021-05-25 18:25 – Updated: 2024-08-03 23:25
VLAI
Title
ReDoS in Sec-Websocket-Protocol header
Summary
ws is an open source WebSocket client and server library for Node.js. A specially crafted value of the `Sec-Websocket-Protocol` header can be used to significantly slow down a ws server. The vulnerability has been fixed in ws@7.4.6 (https://github.com/websockets/ws/commit/00c425ec77993773d823f018f64a5c44e17023ff). In vulnerable versions of ws, the issue can be mitigated by reducing the maximum allowed length of the request headers using the [`--max-http-header-size=size`](https://nodejs.org/api/cli.html#cli_max_http_header_size_size) and/or the [`maxHeaderSize`](https://nodejs.org/api/http.html#http_http_createserver_options_requestlistener) options.
Severity
5.3 (Medium)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/websockets/ws/security/advisor… | x_refsource_CONFIRM |
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| https://lists.apache.org/thread.html/rdfa7b6253c4… | mailing-listx_refsource_MLIST |
| https://security.netapp.com/advisory/ntap-2021070… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| websockets | ws |
Affected:
>= 5.0.0 <= 7.4.5
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CVE-2016-10518 (GCVE-0-2016-10518)
Vulnerability from cvelistv5 – Published: 2018-05-31 20:00 – Updated: 2024-09-17 02:57
VLAI
Summary
A vulnerability was found in the ping functionality of the ws module before 1.0.0 which allowed clients to allocate memory by sending a ping frame. The ping functionality by default responds with a pong frame and the previously given payload of the ping frame. This is exactly what you expect, but internally ws always transforms all data that we need to send to a Buffer instance and that is where the vulnerability existed. ws didn't do any checks for the type of data it was sending. With buffers in node when you allocate it when a number instead of a string it will allocate the amount of bytes.
Severity
No CVSS data available.
CWE
- CWE-201 - Information Exposure Through Sent Data (CWE-201)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/websockets/ws/releases/tag/1.0.1 | x_refsource_MISC |
| https://nodesecurity.io/advisories/67 | x_refsource_MISC |
| https://gist.github.com/c0nrad/e92005446c480707a74a | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HackerOne | ws node module |
Affected:
<= 1.0.0
|
Date Public
2018-04-26 00:00
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CVE-2016-10542 (GCVE-0-2016-10542)
Vulnerability from cvelistv5 – Published: 2018-05-31 20:00 – Updated: 2024-09-17 04:03
VLAI
Summary
ws is a "simple to use, blazing fast and thoroughly tested websocket client, server and console for node.js, up-to-date against RFC-6455". By sending an overly long websocket payload to a `ws` server, it is possible to crash the node process. This affects ws 1.1.0 and earlier.
Severity
No CVSS data available.
CWE
- CWE-400 - Denial of Service (CWE-400)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/nodejs/node/issues/7388 | x_refsource_MISC |
| https://nodesecurity.io/advisories/120 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HackerOne | ws node module |
Affected:
<=1.1.0
|
Date Public
2018-04-26 00:00
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