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.
History

Fri, 09 Oct 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Multiversx Labs
Multiversx Labs multisig-improved
Vendors & Products Multiversx Labs
Multiversx Labs multisig-improved

Wed, 07 Oct 2026 20:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-285

Wed, 07 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 07 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-306
CWE-862
CWE-863
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Wed, 07 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
References

Tue, 06 Oct 2026 22:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-285

Tue, 06 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
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.
Title CVE-2026-106511
References

cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published: 2026-10-06T18:52:33.825Z

Updated: 2026-10-07T17:55:09.072Z

Reserved: 2026-10-06T18:47:59.209Z

Link: CVE-2026-106511

cve-icon Vulnrichment

Updated: 2026-10-07T17:54:20.561Z

cve-icon NVD

Status : Deferred

Published: 2026-10-06T19:18:13.500

Modified: 2026-10-07T18:17:16.800

Link: CVE-2026-106511

cve-icon Redhat

No data.