Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 improperly follow the CORS cross-origin request algorithm for the POST method in situations involving an unspecified Content-Type header manipulation, which allows remote attackers to bypass the Same Origin Policy by leveraging the lack of a preflight-request step.
2015-11-05T05:59:17.263
2025-04-12T10:46:40.837
Deferred
CVSSv2: 7.5 (HIGH)
AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Application | mozilla | firefox | 38.0 | Yes |
Application | mozilla | firefox | 38.0.1 | Yes |
Application | mozilla | firefox | 38.0.5 | Yes |
Application | mozilla | firefox | 38.1.0 | Yes |
Application | mozilla | firefox | 38.1.1 | Yes |
Application | mozilla | firefox | 38.2.0 | Yes |
Application | mozilla | firefox | 38.2.1 | Yes |
Application | mozilla | firefox | 38.3.0 | Yes |
Application | mozilla | firefox | ≤ 41.0.2 | Yes |