A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy connect-src header to be ignored. This could lead to connections to restricted origins from inside WebWorkers. This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-3275-1 | firefox-esr security update |
Debian DLA |
DLA-3324-1 | thunderbird security update |
Debian DSA |
DSA-5322-1 | firefox-esr security update |
Debian DSA |
DSA-5355-1 | thunderbird security update |
EUVD |
EUVD-2023-27702 | A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy connect-src header to be ignored. This could lead to connections to restricted origins from inside WebWorkers. This vulnerability affects Firefox < 109, Thunderbird < 102.7, and Firefox ESR < 102.7. |
Ubuntu USN |
USN-5816-1 | Firefox vulnerabilities |
Ubuntu USN |
USN-5824-1 | Thunderbird vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 18 Dec 2025 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy connect-src header to be ignored. This could lead to connections to restricted origins from inside WebWorkers. This vulnerability affects Firefox < 109, Thunderbird < 102.7, and Firefox ESR < 102.7. | A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy connect-src header to be ignored. This could lead to connections to restricted origins from inside WebWorkers. This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7. |
| Title | Mozilla: Content Security Policy wasn't being correctly applied to WebSockets in WebWorkers | Content Security Policy wasn't being correctly applied to WebSockets in WebWorkers |
Fri, 10 Jan 2025 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Projects
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Status: PUBLISHED
Assigner: mozilla
Published:
Updated: 2025-12-18T15:22:56.025Z
Reserved: 2023-01-16T00:00:00
Link: CVE-2023-23602
Updated: 2024-08-02T10:35:33.382Z
Status : Modified
Published: 2023-06-02T17:15:10.777
Modified: 2025-12-18T16:15:48.760
Link: CVE-2023-23602
OpenCVE Enrichment
No data.
Debian DLA
Debian DSA
EUVD
Ubuntu USN