Vulnerability Description
When injecting an HTML base element, some requests would ignore the CSP's base-uri settings and accept the injected element's base instead. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 105.0 |
| Mozilla | Firefox Esr | < 102.3 |
| Mozilla | Thunderbird | < 102.3 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1770094Issue TrackingPermissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-40/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-41/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-42/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1770094Issue TrackingPermissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-40/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-41/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-42/Vendor Advisory
FAQ
What is CVE-2022-40956?
CVE-2022-40956 is a vulnerability with a CVSS score of 6.1 (MEDIUM). When injecting an HTML base element, some requests would ignore the CSP's base-uri settings and accept the injected element's base instead. This vulnerability affects Firefox ESR < 102.3, Thunderbird ...
How severe is CVE-2022-40956?
CVE-2022-40956 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-40956?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird.