Cronos

This bug bounty program is focused on the Ult App and its supporting backend APIs, targeting vulnerabilities that directly lead to loss of user funds, breach of sensitive data (user's PII, clear transaction or payment details, internal data etc.), or unauthorized modification/deletion of data belonging to other users. Ult is a trading app built by Cronos Labs that brings crypto, perps, commodities and prediction markets into one account.

Started date:

28 Sep 2026

Last updated:

28 Sep 2026

Submissions:

102

Up to:

$20,000

Paid:

$0

Triaged by HackenProof

This bug bounty program is focused on smart contracts and decentralised applications in Cronos blockchain with the emphasis on any vulnerabilities causing unintentional withdrawal/draining of funds/loss of user funds. The program covers key projects in the Cronos ecosystem, including VVS Finance, Tectonic, and other DeFi projects. Cronos is the EVM chain running in parallel to the Cronos POS Chain (https://cronos-pos.org). It aims to massively scale the DeFi and decentralised application (DApp) ecosystem, by providing developers with the ability to instantly port apps from Ethereum and EVM-compatible chains.

Started date:

28 Mar 2024

Last updated:

16 Sep 2026

Submissions:

234

Up to:

$250,000

Paid:

$150

Triaged by HackenProof

This bug bounty program is focused on Web in Cronos which will directly lead to loss of user funds, or breach of sensitive data, or deletion of site data.

Started date:

28 Mar 2024

Last updated:

04 Sep 2026

Submissions:

78

Up to:

$2,500

Paid:

$10,006

Triaged by HackenProof

This bug bounty program is focused on Cronos (blockchain) with the emphasis on any vulnerabilities causing unintentional withdrawal/draining of funds/loss of user funds. Cronos is the Ethereum Virtual Machine (EVM) chain running in parallel to the Cronos POS Chain (https://cronos-pos.org). It aims to massively scale the DeFi and decentralised application (DApp) ecosystem, by providing developers with the ability to instantly port apps from Ethereum and EVM-compatible chains.

Started date:

28 Mar 2024

Last updated:

15 May 2026

Submissions:

423

Up to:

$100,000

Paid:

$118,980

Triaged by HackenProof

This bug bounty program is focused on smart contracts and decentralised applications in Cronos zkEVM blockchain with the emphasis on any vulnerabilities causing unintentional withdrawal/draining of funds/loss of user funds. The program covers key projects in the Cronos zkEVM ecosystem, including Amply Finance, H2 Finance, and other DeFi projects. Cronos zkEVM is a blockchain network using ZK Stack. It aims to massively scale existing portfolio of Cronos apps and chains.by leveraging cost-efficient zero-knowledge proof system.

Started date:

08 Nov 2024

Last updated:

13 May 2026

Submissions:

274

Up to:

$200,000

Paid:

$550

Triaged by HackenProof