Vulnerabilites related to parceljs - parcel
CVE-2025-56648 (GCVE-0-2025-56648)
Vulnerability from cvelistv5
Published
2025-09-17 00:00
Modified
2025-09-17 19:21
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE
  • n/a
Summary
npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them.
References
https://gist.github.com/R4356th/41f468def606b2406e36f7193f5322b8
https://github.com/parcel-bundler/parcel/discussions/10089
https://github.com/parcel-bundler/parcel/issues/10216
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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CVE-2018-14731 (GCVE-0-2018-14731)
Vulnerability from cvelistv5
Published
2018-09-21 17:00
Modified
2024-08-05 09:38
Severity ?
CWE
  • n/a
Summary
An issue was discovered in HMRServer.js in Parcel parcel-bundler. Attackers are able to steal developer's code because the origin of requests is not checked by the WebSocket server, which is used for HMR (Hot Module Replacement). Anyone can receive the HMR message sent by the WebSocket server via a ws://127.0.0.1 connection (with a random TCP port number) from any origin. The random port number can be found by connecting to http://127.0.0.1 and reading the "new WebSocket" line in the source code.
References
https://github.com/parcel-bundler/parcel/issues/1783x_refsource_CONFIRM
https://blog.cal1.cn/post/Sniffing%20Codes%20in%20Hot%20Module%20Reloading%20Messagesx_refsource_MISC
https://github.com/parcel-bundler/parcel/pull/1794x_refsource_CONFIRM
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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Vulnerability from fkie_nvd
Published
2018-09-21 17:29
Modified
2024-11-21 03:49
Severity ?
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
An issue was discovered in HMRServer.js in Parcel parcel-bundler. Attackers are able to steal developer's code because the origin of requests is not checked by the WebSocket server, which is used for HMR (Hot Module Replacement). Anyone can receive the HMR message sent by the WebSocket server via a ws://127.0.0.1 connection (with a random TCP port number) from any origin. The random port number can be found by connecting to http://127.0.0.1 and reading the "new WebSocket" line in the source code.
References
cve@mitre.orghttps://blog.cal1.cn/post/Sniffing%20Codes%20in%20Hot%20Module%20Reloading%20MessagesExploit, Third Party Advisory
cve@mitre.orghttps://github.com/parcel-bundler/parcel/issues/1783Vendor Advisory
cve@mitre.orghttps://github.com/parcel-bundler/parcel/pull/1794Exploit, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://blog.cal1.cn/post/Sniffing%20Codes%20in%20Hot%20Module%20Reloading%20MessagesExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/parcel-bundler/parcel/issues/1783Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/parcel-bundler/parcel/pull/1794Exploit, Patch, Vendor Advisory
Impacted products
Vendor Product Version
parceljs parcel -


To clipboard 

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Vulnerability from fkie_nvd
Published
2025-09-17 19:15
Modified
2025-09-26 15:06
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Summary
npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them.
References
cve@mitre.orghttps://gist.github.com/R4356th/41f468def606b2406e36f7193f5322b8Exploit
cve@mitre.orghttps://github.com/parcel-bundler/parcel/discussions/10089Issue Tracking
cve@mitre.orghttps://github.com/parcel-bundler/parcel/issues/10216Exploit, Issue Tracking
Impacted products
Vendor Product Version
parceljs parcel *
parceljs parcel 2.0.0


To clipboard 

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