What happened?
MANTRA, a project that runs a Layer 1 blockchain focused on the tokenization of real-world assets (RWA), has halted its main network. According to The Defiant, the team announced the suspension on August 20, 2026 at 8:10 PM Eastern Time and said it was an incident in the chain's Cosmos EVM module. Cosmos EVM is a software component that lets chains built on the Cosmos SDK run applications compatible with the Ethereum Virtual Machine.
On Friday morning, according to The Defiant, the team said it had found the root cause and contained the threat. The network, however, still was not producing blocks.
The Polish outlet Incrypted described the incident as an attack in which the attacker exploited a vulnerability in a so-called upstream dependency, meaning an external component the chain relies on. According to Incrypted, the team froze transactions and all access endpoints and called the network halt a precautionary measure.
How did the market react?
According to CoinDesk, the MANTRA token dropped 18% to an all-time low. The price touched $0.004126 shortly before the network stopped producing blocks. CoinDesk also reports that MANTRA later confirmed the attacker exploited a vulnerability in software the chain uses.
What are the exchanges doing?
According to its status portal, the Bitvavo exchange temporarily suspended deposits and withdrawals of the MANTRA token. Trading, per the same notice, remained available. Bitvavo pointed users to MANTRA's official status page (status.mantrachain.io) for the latest information directly from the team.
What we still don't know
Key parts of the story remain open. The sources agree that this was an exploit of a vulnerability and that the network is halted, but according to Incrypted the team has not yet disclosed the scope of the incident. It is not clear from the available sources how much, if anything, was stolen, exactly when the network will restart, or whether and how affected users will be compensated.
The naming of the cause itself also calls for caution. The Defiant talks about an incident in the Cosmos EVM module, Incrypted about a vulnerability in an upstream dependency, and CoinDesk more generally about software the chain uses. Whether these refer to exactly the same component and who bears responsibility cannot be confirmed with certainty from the available sources.
What to watch for with this type of event
With a chain halt following a security incident, it is useful to keep an eye on several things: the project's official status page (here status.mantrachain.io), a postmortem report with technical details, on-chain data after the restart, and exchange announcements about resuming deposits and withdrawals. The difference between "cause found" and "network fully restored and secured" tends to be significant and can vary in timing.
Charliedesk will later be able to verify this article against what the project publishes in its postmortem report: whether it really was the Cosmos EVM module, what the extent of the damage was, and when the network returned to operation.