However, User->setupRedis() returns false when Redis cannot be reached. The vulnerable _shouldLog() logic only returned true when a Redis instance existed and no throttle key was present. Therefore, when Redis was unavailable, the function did not allow the log write at all, effectively silencing authentication-failure logging for the duration of the outage.
Version affected: ≤2.5.45
No advisories yet.
Solution
The _shouldLog() method now explicitly checks whether the Redis connection is available before attempting to use it. If setupRedis() returns false, the method immediately returns true, causing every authentication-failure event to be logged. This converts the previous fail-closed behavior (silence on dependency failure) into a fail-open behavior for security logging (log everything when the throttle state is unavailable), ensuring that a Redis outage cannot be used to suppress the audit trail of failed authentication attempts.
Workaround
No workaround given by the vendor.
| Link | Providers |
|---|---|
| https://github.com/MISP/MISP/commit/a39b25d2f |
|
Tue, 15 Sep 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 15 Sep 2026 13:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Misp
Misp misp |
|
| Vendors & Products |
Misp
Misp misp |
Tue, 15 Sep 2026 11:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Affected versions of MISP use Redis to throttle repeated authentication-failure log entries. The intent is to avoid excessive duplicate logs while still recording failed authentication activity. However, User->setupRedis() returns false when Redis cannot be reached. The vulnerable _shouldLog() logic only returned true when a Redis instance existed and no throttle key was present. Therefore, when Redis was unavailable, the function did not allow the log write at all, effectively silencing authentication-failure logging for the duration of the outage. Version affected: ≤2.5.45 | |
| Title | MISP: Authentication failure logging suppressed during Redis unavailability | |
| Weaknesses | CWE-778 | |
| References |
| |
| Metrics |
cvssV4_0
|
Projects
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Status: PUBLISHED
Assigner: CIRCL
Published:
Updated: 2026-09-15T12:09:48.540Z
Reserved: 2026-09-15T11:24:19.778Z
Link: CVE-2026-92002
Updated: 2026-09-15T12:04:29.010Z
Status : Received
Published: 2026-09-15T12:17:55.557
Modified: 2026-09-15T12:17:55.557
Link: CVE-2026-92002
No data.
OpenCVE Enrichment
Updated: 2026-09-15T12:45:18Z