CVE-2026-67581
Auth bypass allows replay of on-chain transfer to access paid resources.
Is CVE-2026-67581 being exploited?
Not confirmed. CVE-2026-67581 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 0.41% probability of exploitation in the next 30 days.
How severe is CVE-2026-67581?
CVE-2026-67581 is rated High with a CVSS score of 8.7. 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-2026-67581?
Yes. A fix has been recorded for CVE-2026-67581. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-67581 affect?
CVE-2026-67581 affects ZenHive mpp 0.3.0 - 0.6.2, EVM.Methods.EVM.verify, MPP.Plug dedup store. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-67581?
Upgrade ZenHive mpp to >=0.6.3 and bind/verifiy proofs to challenge to prevent replay.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attacker can replay a public historical on-chain transfer to bypass payment checks and consume paid resources repeatedly.
Immediate action required
- affected>= 0.3.0 and < 0.6.3
- affected>= 65b9e425ce27631c786a5b380b5e4c5ae607ec6d and < ecc038088b1cda09ad8a84acc6cc112addb4a68f
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.