CVE-2026-106511
CRITICAL
CVSS 9.8
Published: 2026-10-06
Modified: 2026-10-07
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Description
MultiversX's multisig-improved (repository: mx-multisig-and-modules) reference implementation of their on-chain multisig smart contract system contains a vulnerability where a missing independent authorization check allows any account with the Proposer role to perform explicitly barred actions. This vulnerability allows the Proposer role to move funds alone, draining 100% of a contract's EGLD/ESDT balance in two transactions with zero signatures.
Quick Facts
| CVE ID | CVE-2026-106511 |
| CVSS Score | 9.8 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published | 2026-10-06 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |