CVE-2026-59252
Unauthenticated clients can drain fee-payer wallet via crafted low-gas transactions.
Is CVE-2026-59252 being exploited?
Not confirmed. CVE-2026-59252 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.63% probability of exploitation in the next 30 days.
How severe is CVE-2026-59252?
CVE-2026-59252 is rated High with a CVSS score of 8.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-59252?
Yes. A fix has been recorded for CVE-2026-59252. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-59252 affect?
CVE-2026-59252 affects ZenHive mpp (Elixir) >=0.2.0 and <0.6.0, Components using fee_payer: true and MPP.Methods.Tempo. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-59252?
Upgrade mpp to >=0.6.0; validate gas_limit server-side or disable fee_payer.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attackers can cause the fee-payer to pay burned gas, draining wallet and causing denial of service for sponsored payments.
Immediate action required
- affected>= 0.2.0 and < 0.6.0
- affected>= d29d54e507918db00a5b65d90136b73166c017d7 and < d84e3e528db39654540c2035ea0fbdf7b950d3d1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.