CVE-2026-106511

CVSS 9.8 (critical) · published 2026-10-06

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.

Weakness: CWE-306, CWE-862, CWE-863

Source: NVD CVE-2026-106511

References

• https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312
• https://github.com/multiversx/mx-multisig-and-modules
• https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312

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