CVE-2026-106511 MultiversX multisig-improved - Broken Access Control

MultiversX multisig-improved contains a broken access control vulnerability caused by missing independent authorization checks, letting attackers with Proposer role move funds alone, exploit requires Proposer role.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.38% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Broken Access Control, Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
6 October 2026
Updated
15 October 2026
Weakness
CWE-306

Vendor fix

Update to the latest version with fixed authorization checks.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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