CVE-2026-73541
Unauthenticated actors can drain sponsored fee-payer wallets via concurrent payments.
Is CVE-2026-73541 being exploited?
Not confirmed. CVE-2026-73541 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 0.42% probability of exploitation in the next 30 days.
How severe is CVE-2026-73541?
CVE-2026-73541 is rated High with a CVSS score of 8.3. 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-2026-73541?
Yes. A fix has been recorded for CVE-2026-73541. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-73541 affect?
CVE-2026-73541 affects ZenHive mpp 0.2.0 - 0.11.x, Applications using mpp sponsored payments. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73541?
Upgrade to mpp >=0.12.0; enforce throttling and per-sponsor exposure caps.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote unauthenticated attacker can submit many sponsored transactions to exhaust a fee-payer wallet, causing financial loss and denial of service for legitimate payers.
Immediate action required
- affected>= 0.2.0 and < 0.12.0
- affected>= d29d54e507918db00a5b65d90136b73166c017d7 and < ddc46868fba57ccebb567c04709812b466123076
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.