Two new vulnerabilities have been found in 10.50 and earlier versions.
The first can cause a DoS, the second could allow for remote code execution.
No patches are available as of yet. Recommendations from the Secunia
report are "do not browse untrusted websites or follow untrusted links."
This is a good recommendation in general. Other recommendations have
been to stop using Opera all together until an official patch is available.
My recommendation is to find a common ground somewhere in between. If
you can use another browser for the time being, that is good. If you
are careful about the links you browse, that strategy could work as well.
When a patch is available, please apply it.