CVE-2020-26958
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2020-26958
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-26958.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2020-26958
- Downstream
- Related
- Published
- 2020-12-09T01:15:13Z
- Modified
- 2025-08-09T20:01:27Z
- Severity
-
- 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a Content Security Policy bypass. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
- References