Interesting, and a good find! SCIP - Report: Created: 07/29/2013, Updated: 03/18/2014. More here: http://www.osvdb.org/show/osvdb/95633

Opera contains a flaw that is triggered as user-supplied input is not properly sanitized.
This may allow a context-dependent attacker to corrupt memory and cause a denial of service.

Location: Context Dependent Attack Type: Input Manipulation Impact: Loss of Availability
...

I wasn't familiar with that vulnerability listing service; apparently the report hasn't been widely disseminated yet, since it doesn't show up in the other "big" name lists. The one mitigating thing at present is that it only appears to result in a DOS situation, rather than remote penetration of the system, etc.