Security advisory

{
  "id": "b6536000f9efa72790e2cf9f0f69c92b386631c09ddf258c4f2d3ce31deeb4e1",
  "url": "https://osv.dev/vulnerability/CVE-2026-76401",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-76401",
    "summary": "In Splunk Connect for Kafka versions below 2.2.7, an unauthenticated user who can reach the Kafka Connect Representational State Transfer (REST) API could configure timestamp extraction with a crafted regular expression and matching event data to block a Kafka Connect worker thread, stopping event delivery for the affected connector. The vulnerability is possible because timestamp extraction evaluates customer-supplied regular expressions without a time limit. For more information see Install Splunk Connect for Kafka (https://help.splunk.com/en/data-management/integrate-data-with-add-ons/splunk-connect-for-kafka/2.2/install/install-splunk-connect-for-kafka) and Data ingestion parameters for Splunk Connect for Kafka (https://help.splunk.com/en/data-management/integrate-data-with-add-ons/splunk-connect-for-kafka/2.2/overview/data-ingestion-parameters-for-splunk-connect-for-kafka) in the Splunk documentation.",
    "evidence": "osv:CVE-2026-76401",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-76401",
      "aliases": [
        "CVE-2026-76401"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/splunk/kafka-connect-splunk",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "ca93aec6f1ed6765ee3878ae8ee681b14c0ca4e0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:splunk:connect_for_kafka:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.2.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.2.6",
            "v2.2.5",
            "v2.2.4",
            "v2.2.3",
            "v2.2.2",
            "v2.2.0",
            "v2.1.2",
            "v2.0.9",
            "v2.0.3",
            "v2.0.5",
            "v2.0.2",
            "v2.0.1",
            "v2.0",
            "v1.2.0",
            "v1.1.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-76401.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:38.530876663Z",
      "provider": "osv",
      "references": [
        "https://advisory.splunk.com/advisories/SVD-2026-0808"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2026-76401",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 434488,
  "published_at": "2026-08-19T22:17:26.78+00:00"
}