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Blockchain CBSP Exam - Topic 5 Question 129 Discussion

Posted by Afton on Jun 21, 2026 at 03:22 PM

Which smart contract vulnerability allows an attacker to make a profit off a smart contract cryptocurrency exchange like Bancor?

Suggested Answer: C

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12 comments · newest first
HA
Haley 2 months ago
But what about B) Access Control? Weak permissions can also be exploited.
ME
Meghan 2 months ago
I agree, D) Reentrancy makes sense. It can drain funds.
LO
Louann 2 months ago
I think it's D) Reentrancy. It's a common issue.
AN
An 3 months ago
I heard B) Access Control can also lead to big problems, though.
CA
Carolann 3 months ago
100% agree with D) Reentrancy, it's caused so many hacks!
MI
Misty 3 months ago
Wait, are we sure it's not C) Race Conditions? Seems like a tricky one.
JU
Jules 3 months ago
I thought it was A) Arithmetic issues? Those are pretty common too.
EL
Elin 3 months ago
Definitely D) Reentrancy! That's a classic one.
VA
Valentin 3 months ago
I remember reading about arithmetic issues, but they seem less relevant to exchanges like Bancor. Maybe it's D) Reentrancy after all?
FR
Francoise 4 months ago
I practiced a question similar to this, and I think the answer was C) Race Conditions. But I'm not confident about that.
SA
Salome 4 months ago
I feel like access control vulnerabilities could also be a factor, but I can't recall a specific example related to exchanges.
LI
Lina 4 months ago
I think it might be D) Reentrancy, but I'm not entirely sure. I remember it being a common issue in smart contracts.
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