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0xCERT Security Advisory 0xCERT-2026-0143
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Advisory-ID:  0xCERT-2026-0143
Severity:     High
Published:    2026-09-22T00:00:00.000Z
Updated:      2026-10-08T22:48:58.381Z
Chains:       Other / Multi-chain
URL:          https://www.0xcert.com/advisory/0xCERT-2026-0143

Title: Astroport exploit — $4.9M lost on Neutron

Summary
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Astroport lost an estimated $4.9M on Neutron (malicious proposal), 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
Astroport lost an estimated $4.9M on Neutron (malicious proposal), according to the DeFiLlama hacks database. Users and integrators should review exposure and follow the project's official channels.

Incident
- - Protocol: Astroport
- - Date (UTC): 2026-09-22
- - Estimated loss: $4.9M
- - Chain(s): Neutron
- - Technique: Malicious Proposal
- - Classification: Governance
- - Target: DeFi Protocol

Recommended actions
- - Revoke token approvals granted to Astroport 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

Verify with the 0xCERT OpenPGP key: https://www.0xcert.com/pgp.asc
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