Medium severity · published Sep 15, 2026
CVE-2026-92003
MISP Unthrottled Authentication Failure Log Writes Enable Resource Exhaustion
6.9
CVSS
0.6%
EPSS
No
On KEV
Description
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
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MI
MISP · MISP
before 2.5.46 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-92003
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-92003
github.com
https://github.com/MISP/MISP/commit/2bf887433
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