CVE-2026-92003CWE-400CWE-770denial-of-service

CVE-2026-92003

published September 15, 2026

CVSS
6.9
EPSS
1%
Percentile
46.5
In the wild
Unconfirmed
What it is

Affected versions of MISP do not consistently apply the existing authentication-failure logging throttle.

Two API authentication failure branches wrote directly to the Log model:

- API requests with no authentication key;

- requests supplying an API key with an incorrect length

Unlike other authentication failures, these paths bypassed _shouldLog(), so every request could create another durable auth_fail entry.

Version affected: ≤2.5.45

The record
Technical detail
CVSS
6.9 · NONE
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
EPSS
0.00571 · 46.5th percentile
Weaknesses
CWE-400 · Uncontrolled Resource Consumption; CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-09-15T16:17Z
References (1)
https://github.com/MISP/MISP/commit/2bf887433 · 5a6e4751-2f3f-4070-9419-94fb35b644e8
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 15 SEP 11:43Z
    MISP Unthrottled Authentication Failure Log Writes Enable Resource Exhaustion
    cvelistv5