CVE-2026-55764
Mint-role can bypass SFT max-supply via int64 overflow, enabling massive unauthorized minting.
Is CVE-2026-55764 being exploited?
Not confirmed. CVE-2026-55764 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 0.32% probability of exploitation in the next 30 days.
How severe is CVE-2026-55764?
CVE-2026-55764 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-2026-55764?
Yes. A fix has been recorded for CVE-2026-55764. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-55764 affect?
CVE-2026-55764 affects Klever-Go <= 1.7.18, Klever blockchain nodes, Semi-fungible token minting paths, Mint-role accounts. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-55764?
Upgrade Klever-Go to v1.7.19, rotate mint keys, and monitor token supply and chain state.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
A mint-role holder can trigger signed int64 overflow to bypass MaxSupply and credit ≈MaxInt64 tokens, corrupting on-chain counters and inflating supply.
Immediate action required
- affected< 1.7.19
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.