CVE-2026-106511

CVE-2026-106511

Published Oct 6, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Multiversx Labs
Multiversx Labs multisig-improved
Vendors & Products Multiversx Labs
Multiversx Labs multisig-improved
Type Values Removed Values Added
Weaknesses CWE-285
Type Values Removed Values Added
Metrics ssvc

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

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'}

Type Values Removed Values Added
Weaknesses CWE-285
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
Weaknesses

Sources

Status
PUBLISHED
Assigner
certcc
Published
Updated
Oct 7, 2026, 5:55 PM
Reserved
Oct 6, 2026, 6:47 PM
Status
Deferred
Published
Oct 6, 2026, 7:18 PM
Modified
Oct 7, 2026, 6:17 PM