CVE-2026-8741CWE-362

EMQX QoS 2 PUBLISH Packet emqx_persistent_session_ds.erl race condition

Low · published May 17, 2026

CVSS v4.0
2.3
EPSS
0%
Percentile
31.9
In the wild
Unconfirmed
What it is

A vulnerability has been found in EMQX up to 6.2.0. This affects an unknown function of the file apps/emqx/src/emqx_persistent_session_ds.erl of the component QoS 2 PUBLISH Packet Handler. Such manipulation leads to race condition. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is reported as difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure.

The record
Technical detail
CVSS v4.0
2.3 · LOW
Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00390 · 31.9th percentile
Weakness
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Published
2026-05-17T08:15Z
EPSS history
Timeline
  • 17 MAY 08:15Z
    EMQX QoS 2 PUBLISH Packet emqx_persistent_session_ds.erl race condition
    cvelistv5