OpenCATS before 0.12.0 Stored XSS via MRU Navigation Panel

{
  "id": "122d235b49862eef5f58194d2ddc142bbdd3586e98d844996d48af814737e7f6",
  "url": "https://osv.dev/vulnerability/CVE-2026-115513",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "OpenCATS before 0.12.0 Stored XSS via MRU Navigation Panel",
    "summary": "OpenCATS before 0.12.0 contains a stored cross-site scripting vulnerability that allows a low-privileged authenticated user to inject HTML/JavaScript payloads by setting a Candidate, Company, Contact, Job Order, or List name/title field, which is stored unsanitized and later rendered unescaped in the 'Recent' (MRU) navigation panel displayed on nearly every page via lib/MRU.php's getFormatted() function. Attackers can exploit this by crafting a malicious record name that executes arbitrary JavaScript in the session of any other user, including Site Administrators, who views the record, enabling session/cookie theft and privilege escalation to full administrative control.",
    "evidence": "osv:CVE-2026-115513",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-115513",
      "aliases": [
        "CVE-2026-115513"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/opencats/opencats",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e8caaa631b0068ef17ed216be3a0526e7f951ca0"
                },
                {
                  "fixed": "a37909bea08b5249604e86742023a71638a6d7b5"
                },
                {
                  "fixed": "f82e0ee3045845b90b7e111c46f30998496e38a8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.10.0"
                      },
                      {
                        "fixed": "0.12.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "f82e0ee3045845b90b7e111c46f30998496e38a8"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a37909bea08b5249604e86742023a71638a6d7b5"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v0.12.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.11.1",
            "v0.11.0",
            "v0.10.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-115513.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:42.206036817Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115513.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-115513",
        "https://www.vulncheck.com/advisories/opencats-before-stored-xss-via-mru-navigation-panel",
        "https://github.com/opencats/OpenCATS/commits/master/lib/MRU.php",
        "https://github.com/opencats/OpenCATS/commit/f82e0ee3045845b90b7e111c46f30998496e38a8",
        "https://github.com/opencats/OpenCATS/releases/tag/v0.12.0",
        "https://github.com/opencats/OpenCATS"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115513.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-115513",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 510106,
  "published_at": "2026-10-22T16:52:10.542+00:00"
}