CVE-2026-106511
Quick assessment
Affected
MultiversX Labs S.R.L. multisig-improved
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
MultiversX 的多签名增强版（代码仓库：mx-multisig-and-modules）是其链上多签名智能合约系统的参考实现，其中存在一个漏洞：缺少独立的授权检查机制，导致任何拥有“提议者（Proposer）”角色的账户都可以执行明确被禁止的操作。该漏洞使得“提议者”角色能够单独转移资金，在零签名的情况下，仅通过两笔交易即可清空合约中 100% 的 EGLD/ESDT 余额。
Possible ATT&CK Techniques 2 AI
T1052 · Exfiltration Over Physical Medium T1499 · Endpoint Denial of ServiceAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| MultiversX Labs S.R.L. | multisig-improved | GitHub commit 2e6dbea40f9b8ac165572a9efd4304804762a299 |
affected |
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I. Basic Information for CVE-2026-106511
Vulnerability Information
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Vulnerability Title
CVE-2026-106511
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| MultiversX Labs S.R.L. | multisig-improved | GitHub commit 2e6dbea40f9b8ac165572a9efd4304804762a299 | - |
|
II. Public POCs for CVE-2026-106511
| # | POC Description | Source Link | Shenlong Link |
|---|
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Proof of Concept for CVE-2026-106511 (1)
Vendor Pages for CVE-2026-106511 (1)
V. Comments for CVE-2026-106511
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