The British fighter had tested positive for a banned substance in the lead-up to his fight with Chris Eubank Jr last year and the much-anticipated bout was cancelled as a result.
However, the WBC ruled earlier this week that Benn's "highly-elevated consumption of eggs" was a "reasonable explanation" for his failed test.
In a statement issued on social media, the fighter expressed relief at being able to continue with his career but added that he was not totally in agreement with the organisation's statement.
Benn said: "I'm pleased that the WBC have finally cleared my name, with no sanction or ban or any kind and a reinstatement in the world rankings. I can now put this behind me and resume my career immediately.
"Whilst I welcome the ultimate outcome, I do not agree with everything said in the WBC's statement. That's something I am discussing further with my legal team.
"There will be additional comment in due course but for the time being I just want to focus on getting my career back on track after being effectively prevented from fighting for many months.
"I want to thank my supporters for their patience and perseverance and am looking forward to my return with a vengeance."
Benn continues to be under investigation by UK Anti-Doping and the British Boxing Board of Control and is currently unable to box in the UK.
However, the fighter would be allowed to fight overseas if he can find alternative jurisdiction to box in.