CVE-2026-71297CWE-306

CVE-2026-71297

Medium · published October 6, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
4.0
In the wild
Unconfirmed
What it is

A flaw was found in the maestro gRPC broker. This vulnerability allows a remote attacker, with a valid client certificate, to bypass authentication. This bypass enables the attacker to subscribe to other consumers' event streams, leading to unauthorized information disclosure, or to publish forged agent status, which can compromise data integrity.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00152 · 4.0th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-10-06T00:17Z
References (2)
EPSS history
Timeline
  • 07 OCT 03:42Z
    EPSS moved — → 0%
    epss
  • 05 OCT 19:55Z
    Maestro: maestro: grpc broker has no auth interceptor and client mtls is optional
    cvelistv5