OpenCATS before 0.10.0 Missing Authorization via Activity AJAX Endpoints

{
  "id": "76b870115521e4a163ad3fa68d2eca6c64967412b011089778e20920c3776c70",
  "url": "https://osv.dev/vulnerability/CVE-2026-112783",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "OpenCATS before 0.10.0 Missing Authorization via Activity AJAX Endpoints",
    "summary": "OpenCATS before 0.10.0 contains a missing authorization vulnerability in ajax/deleteActivity.php and ajax/editActivity.php that allows READ-level users to edit and delete activity entries. Authenticated attackers can supply an arbitrary activityID via GET or POST to modify or delete activity and pipeline history for candidates, contacts and companies.",
    "evidence": "osv:CVE-2026-112783",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-112783",
      "aliases": [
        "CVE-2026-112783"
      ],
      "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/opencats/opencats",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "e8caaa631b0068ef17ed216be3a0526e7f951ca0"
                },
                {
                  "fixed": "aa3b414c3672f5010ca26c44192aa8e72d3735bd"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.10.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "aa3b414c3672f5010ca26c44192aa8e72d3735bd"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "e8caaa631b0068ef17ed216be3a0526e7f951ca0"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v0.10.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.9.7.4",
            "0.9.7.3",
            "v0.9.7.2",
            "opencats-0.9.7",
            "0.9.6",
            "0.9.4-3",
            "0.9.4-2",
            "0.9.4-1",
            "0.9.4",
            "0.9.3-3",
            "0.9.3-2",
            "0.9.3-1",
            "0.9.1a",
            "opencats-0.9.3(final)",
            "opencats-0.9.3(alpha)",
            "opencats-0.9.3",
            "0.9.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112783.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:39.248738438Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112783.json",
        "https://github.com/opencats/OpenCATS/releases/tag/v0.10.0",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-112783",
        "https://www.vulncheck.com/advisories/opencats-before-0.10.0-missing-authorization-via-activity-ajax-endpoints",
        "https://github.com/opencats/OpenCATS/issues/720",
        "https://github.com/opencats/OpenCATS/commit/aa3b414c3672f5010ca26c44192aa8e72d3735bd",
        "https://github.com/opencats/OpenCATS",
        "https://github.com/opencats/OpenCATS/blob/5781f41814f09493c7ce05b9251b5e09c1aff0cd/ajax/deleteActivity.php",
        "https://github.com/opencats/OpenCATS/blob/5781f41814f09493c7ce05b9251b5e09c1aff0cd/ajax/editActivity.php"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112783.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-112783",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 506827,
  "published_at": "2026-10-20T10:41:32.643+00:00"
}