VulnerabilityModified
CVE-2023-23602
This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
MEDIUM 6.5EPSS 0.60%
Does this matter?
Lower severity and a low EPSS score (0.60%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- EPSS
- 0.60% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-754
- Affected
- mozilla/firefox · mozilla/firefox esr · mozilla/thunderbird
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1800890Issue Tracking, Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-01/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-02/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-03/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1800890Issue Tracking, Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-01/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-02/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-03/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1800890Issue Tracking, Permissions Required, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.