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    2 vulnerabilities by alchemyplatform

    CVE-2025-46834 (GCVE-0-2025-46834)

    Vulnerability from cvelistv5 – Published: 2025-05-15 19:37 – Updated: 2025-05-19 14:42
    VLAI
    Title
    Alchemy's Modular Account can use executeUserOp to bypass allowlist prevalidation hook
    Summary
    Alchemy's Modular Account is a smart contract account that is compatible with ERC-4337 and ERC-6900. In versions on the 2.x branch prior to commit 5e6f540d249afcaeaf76ab95517d0359fde883b0, owners of Modular Accounts can grant session keys (scoped external keys) to external parties and would use the allowlist module to restrict which external contracts can be accessed by the session key. There is a bug in the allowlist module in that we don't check for the `executeUserOp` -> `execute` or `executeBatch` path, effectively allowing any session key to bypass any access control restrictions set on the session key. Session keys are able to access ERC20 and ERC721 token contracts amongst others, transferring all tokens from the account out andonfigure the permissions on external modules on session keys. They would be able to remove all restrictions set on themselves this way, or rotate the keys of other keys with higher privileges into keys that they control. Commit 5e6f540d249afcaeaf76ab95517d0359fde883b0 fixes this issue.
    Severity
    6.6 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-863 - Incorrect Authorization
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

    {
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              "content": {
                "id": "CVE-2025-46834",
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                "timestamp": "2025-05-19T14:41:50.807784Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "modular-account",
          "vendor": "alchemyplatform",
          "versions": [
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              "version": "= 2.0.0"
            }
          ]
        }
      ],
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        }
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      "title": "Alchemy\u0027s Modular Account can use executeUserOp to bypass allowlist prevalidation hook"
    }
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    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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    "dateReserved": "2025-04-30T19:41:58.135Z",
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    CVE-2025-46834 (GCVE-0-2025-46834)

    Vulnerability from nvd – Published: 2025-05-15 19:37 – Updated: 2025-05-19 14:42
    VLAI
    Title
    Alchemy's Modular Account can use executeUserOp to bypass allowlist prevalidation hook
    Summary
    Alchemy's Modular Account is a smart contract account that is compatible with ERC-4337 and ERC-6900. In versions on the 2.x branch prior to commit 5e6f540d249afcaeaf76ab95517d0359fde883b0, owners of Modular Accounts can grant session keys (scoped external keys) to external parties and would use the allowlist module to restrict which external contracts can be accessed by the session key. There is a bug in the allowlist module in that we don't check for the `executeUserOp` -> `execute` or `executeBatch` path, effectively allowing any session key to bypass any access control restrictions set on the session key. Session keys are able to access ERC20 and ERC721 token contracts amongst others, transferring all tokens from the account out andonfigure the permissions on external modules on session keys. They would be able to remove all restrictions set on themselves this way, or rotate the keys of other keys with higher privileges into keys that they control. Commit 5e6f540d249afcaeaf76ab95517d0359fde883b0 fixes this issue.
    Severity
    6.6 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-863 - Incorrect Authorization
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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