CVE-2020-26958
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Mozilla | Firefox | < 83 | affected |
| Mozilla | Firefox ESR | < 78.5 | affected |
| Mozilla | Thunderbird | < 78.5 | affected |
Weaknesses
- Requests intercepted through ServiceWorkers lacked MIME type restrictions
ADP Enrichment
CVE Program Container
Additional References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1669355
- https://www.mozilla.org/security/advisories/mfsa2020-50/
- https://www.mozilla.org/security/advisories/mfsa2020-52/
- https://www.mozilla.org/security/advisories/mfsa2020-51/
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1669355
- https://www.mozilla.org/security/advisories/mfsa2020-50/
- https://www.mozilla.org/security/advisories/mfsa2020-52/
- https://www.mozilla.org/security/advisories/mfsa2020-51/
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