CVSS 4.0
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, само при определена конфигурация или състояние на системата, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
Improper Validation of Specified Quantity in Input in ZenHive mpp allows an unauthenticated remote client to inflate the fee-payer's gas cost per sponsored payment by a large multiplier and to have the sponsor pay for provisioning an access key on the client's own account. When the server sponsors Tempo payments, MPP.Methods.Tempo.FeePayerPolicy.measure/3 in lib/mpp/methods/tempo/fee_payer_policy.ex bounds the gas fields, the fee budget, the validity window and the access list of the client-signed 0x76 envelope, but does not check whether the envelope carries the optional key_authorization field. A client can attach a fully signed key authorization, provisioning a new access key with token spending limits on its own account, alongside the normal payment call. The key and each limit entry are persistent storage writes billed as intrinsic gas to the sponsor, bounded only by the gas_limit ceiling. At the reporter's default of one key with three token limits the sponsored cost rises from about 46,587 gas to about 1,808,700 gas, and the client keeps a valid access key it paid nothing for. This issue affects mpp: from 0.2.0 before 0.16.1.
Засегнати продукти
- ZenHive mpp: 0.2.0 преди 0.16.1
- ZenHive mpp: d29d54e507918db00a5b65d90136b73166c017d7 преди 0482572b47e1ffe1537ab80ab613d47b92833c2d
Вид слабост
История
- 6 септември 2026 Публикувано
Други уязвимости в ZenHive mpp
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-82751
- https://nvd.nist.gov/vuln/detail/CVE-2026-82751
- https://github.com/ZenHive/mpp/security/advisories/GHSA-rpwj-vrf7-4x36
- https://cna.erlef.org/cves/CVE-2026-82751.html
- https://osv.dev/vulnerability/EEF-CVE-2026-82751
- https://github.com/ZenHive/mpp/commit/0482572b47e1ffe1537ab80ab613d47b92833c2d