Vulnerability Details : CVE-2022-40956
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.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2022-40956
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-40956
0.15%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 34 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-40956
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST |
CWE ids for CVE-2022-40956
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: nvd@nist.gov (Primary)
References for CVE-2022-40956
-
https://www.mozilla.org/security/advisories/mfsa2022-41/
Security Vulnerabilities fixed in Firefox ESR 102.3 — MozillaVendor Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1770094
Access DeniedIssue Tracking;Permissions Required;Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2022-42/
Security Vulnerabilities fixed in Thunderbird 102.3 — MozillaVendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2022-40/
Security Vulnerabilities fixed in Firefox 105 — MozillaVendor Advisory
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