{"id":"CVE-2026-106511","state":"PUBLISHED","title":"CVE-2026-106511","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.","publishedAt":"2026-10-06T18:52:33.825Z","updatedAt":"2026-10-07T17:55:09.072Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"certcc","products":["MultiversX Labs S.R.L. multisig-improved"],"affected":[{"vendor":"MultiversX Labs S.R.L.","product":"multisig-improved","versions":[{"version":"GitHub commit 2e6dbea40f9b8ac165572a9efd4304804762a299","status":"affected"}]}],"references":["https://github.com/multiversx/mx-multisig-and-modules","https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312"],"weaknesses":["CWE-862","CWE-863","CWE-306"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/106xxx/CVE-2026-106511.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-106511","state":"PUBLISHED","datePublished":"2026-10-06T18:52:33.825Z","dateUpdated":"2026-10-07T17:55:09.072Z","assignerShortName":"certcc","assignerOrgId":"37e5125f-f79b-445b-8fad-9564f167944b","dateReserved":"2026-10-06T18:47:59.209Z"},"containers":{"cna":{"title":"CVE-2026-106511","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"MultiversX Labs S.R.L.","product":"multisig-improved","versions":[{"version":"GitHub commit 2e6dbea40f9b8ac165572a9efd4304804762a299","status":"affected"}]}],"references":[{"url":"https://github.com/multiversx/mx-multisig-and-modules"},{"url":"https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-862 Missing Authorization"}]},{"descriptions":[{"lang":"en","description":"CWE-863 Incorrect Authorization"}]},{"descriptions":[{"lang":"en","description":"CWE-306 Missing Authentication for Critical Function"}]}],"providerMetadata":{"shortName":"certcc","orgId":"37e5125f-f79b-445b-8fad-9564f167944b","dateUpdated":"2026-10-07T14:10:12.038Z"},"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"VINCE 3.0.49","env":"prod","origin":"https://cveawg.mitre.org/api/cve/CVE-2026-106511"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://gist.github.com/x01griax/c03f4be898dc55ccf3bab667c83c7312","tags":["exploit"]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.8,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-10-07T17:53:21.355591Z","id":"CVE-2026-106511","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","type":"CWE","lang":"en","description":"CWE-862 Missing Authorization"},{"cweId":"CWE-863","type":"CWE","lang":"en","description":"CWE-863 Incorrect Authorization"},{"cweId":"CWE-306","type":"CWE","lang":"en","description":"CWE-306 Missing Authentication for Critical Function"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-07T17:55:09.072Z"}}]}}}