|Date: (C)2010-10-21 (M)2017-09-22|
|CVSS Score: 4.3||Access Vector: NETWORK|
|Exploitability Subscore: 8.6||Access Complexity: MEDIUM|
|Impact Subscore: 2.9||Authentication: NONE|
| ||Confidentiality: NONE|
| ||Integrity: PARTIAL|
| ||Availability: NONE|
Opera before 10.63 does not ensure that the portion of a URL shown in the Address Bar contains the beginning of the URL, which allows remote attackers to spoof URLs by changing a window's size.