CVE-2015-7193
Mozilla: CORS preflight is bypassed when non-standard Content-Type headers are received (MFSA 2015-127)
Severity
ImportantRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · November 4, 2015
Updated · November 21, 2025
Description
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.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 2.0 · 5.1AV:N/AC:H/Au:N/C:P/I:P/A:P
CWE not specified