CVE-2026-91859 Details
Description
Affected versions of MISP can record incorrect access-log data for requests that terminate in an exception. Because CakeErrorController extends AppController, exception rendering runs the application startup path a second time. As a result, __accessMonitor() calls AccessLog::logRequest() twice for one HTTP request. The second deferred writer measures the error-controller execution instead of the original request and can overwrite the row created by the first pass. The corrupted fields include request duration, SQL query count, memory usage, and potentially the recorded query log. The bug was masked because the same model instance retained the ID of the first saved row, causing the later save to issue an UPDATE rather than insert an obvious duplicate row. Version affected: ≤2.5.45
A vulnerability exists in MISP versions through 2.5.45, where the application can log inaccurate access data for requests that encounter exceptions. This issue arises because the error controller, which is part of the CakePHP framework, processes requests in a way that can disrupt normal logging. When an exception occurs, the error controller's processing inadvertently overwrites the original access log entry with data from the error handling, leading to discrepancies in logged information such as request duration, SQL query count, memory usage, and potentially the query log itself. This logging error was not immediately apparent, as the same model instance was used for both logging passes, causing the second pass to update the first log entry instead of creating a new one.
Users can upgrade to MISP version 2.5.47, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 15, 2026CISA-ADP
Assessed Sep 15, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/MISP/MISP/commit/0dae5c072 | CIRCL | Source CodeVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-223 | Omission of Security-relevant Information | CIRCL |
| CWE-778 | Insufficient Logging | CIRCL |
Affected Products
| Product | Versions |
|---|---|
| MISP | <= 2.5.45 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 15, 2026 | CVE Modified | CISA-ADP |
| Sep 15, 2026 | New CVE Received | CIRCL |