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Medium

MISP Access Log Entry Overwritten by Error Controller's Second beforeFilter Pass

Type: advisorySources: OSV

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

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-91859
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 23:43 UTC · Revision 1

Source evidence

MISP Access Log Entry Overwritten by Error Controller's Second beforeFilter Pass

core-osv · Original source

Published 15 Sept 2026, 09:26 UTC

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

osv:CVE-2026-91859
Complete source record
{
  "id": "6e126d4dfa6bbb3e71e55d6b817127ea0cbe64c8b451c20d963b8f74331739b5",
  "url": "https://osv.dev/vulnerability/CVE-2026-91859",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "MISP Access Log Entry Overwritten by Error Controller's Second beforeFilter Pass",
    "summary": "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",
    "evidence": "osv:CVE-2026-91859",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-91859",
      "aliases": [
        "CVE-2026-91859"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/misp/misp",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "20f72101371d18afc5578d52e1543de1a19ef219"
                },
                {
                  "fixed": "0dae5c072"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.5.46"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "0dae5c072"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
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            "v2.5.43",
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91859.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:40.558908915Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91859.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-91859",
        "https://github.com/MISP/MISP/commit/0dae5c072",
        "https://github.com/MISP/MISP"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-223",
          "CWE-778"
        ],
        "cna_assigner": "CIRCL",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91859.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-91859",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 508100,
  "published_at": "2026-09-15T09:26:35.198+00:00"
}