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0xCERT Security Advisory 0xCERT-2026-0157
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Advisory-ID:  0xCERT-2026-0157
Severity:     Medium
Published:    2026-09-10T00:00:00.000Z
Updated:      2026-10-08T22:46:33.364Z
Chains:       BNB Chain, Ethereum
URL:          https://www.0xcert.com/advisory/0xCERT-2026-0157

Title: Symbiosis exploit — $336k lost on BNB Chain, Ethereum

Summary
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Symbiosis lost an estimated $336k on BNB Chain, Ethereum (unbacked cross-chain mint), according to the DeFiLlama hacks database. Users and integrators should review exposure and follow the project's official channels.

Details
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Summary
Symbiosis lost an estimated $336k on BNB Chain, Ethereum (unbacked cross-chain mint), according to the DeFiLlama hacks database. Users and integrators should review exposure and follow the project's official channels.

Incident
- - Protocol: Symbiosis
- - Date (UTC): 2026-09-10
- - Estimated loss: $336k
- - Chain(s): BNB Chain, Ethereum
- - Technique: Unbacked Cross-Chain Mint
- - Classification: Bridge & Cross-Chain
- - Target: DeFi Protocol
- - Bridge incident: yes

Recommended actions
- - Revoke token approvals granted to Symbiosis contracts until the project confirms they are safe
- - Integrators: pause or delist affected assets and monitor for attacker fund movements
- - Beware of follow-on phishing: ignore unofficial "refund", "recovery", or "claim" links and DMs; use the project's verified channels only

Source & attribution
This 0xCERT advisory relays an incident recorded in the DeFiLlama hacks database (https://defillama.com/hacks). Figures are preliminary estimates and may be revised; refer to the project's own post-mortem for the authoritative record. Report additional details to 0xCERT at https://www.0xcert.com/report.

References
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- - https://defillama.com/hacks
- - https://www.blockchainbreaches.com/en/breaches/symbiosis-2026

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