CVE-2026-71960
Hard-coded JWT HMAC secret in Cudy WR3000 allows forged JWTs to access MQTT mesh.
Is CVE-2026-71960 being exploited?
Not confirmed. CVE-2026-71960 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 0.54% probability of exploitation in the next 30 days.
How severe is CVE-2026-71960?
CVE-2026-71960 is rated Critical with a CVSS score of 9.3. 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-2026-71960?
Yes. A fix has been recorded for CVE-2026-71960. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-71960 affect?
CVE-2026-71960 affects Cudy WR3000 (firmware < 2.5.24), Mosquitto MQTT broker auth plugin on Cudy devices. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-71960?
Upgrade firmware to 2.5.24+, disable external MQTT, isolate affected devices, rotate credentials.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Extractable hard-coded JWT HMAC secret lets unauthenticated attackers forge tokens, authenticate to Mosquitto MQTT, and access/control the device's mesh interface.
Immediate action required
- affected>= 2.4.25 and <= 2.4.27
- affected< 2.5.24
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.