CVE-2023-23602
Content Security Policy wasn't being correctly applied to WebSockets in WebWorkers
- State
- Published
- Severity
- 6.5 Medium
- Published
- Jun 2, 2023
- Updated
- Dec 18, 2025
- Reserved
- Jan 16, 2023
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, Firefox ESR < 102.7, and Thunderbird < 102.7.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N | CISA-ADP |
Weaknesses
- CWE-754 Improper Check for Unusual or Exceptional Conditions
Affected Products
| Product | Versions |
|---|---|
FirefoxMozilla |
|
Firefox ESRMozilla |
|
ThunderbirdMozilla |
|
References
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