Security advisory

{
  "id": "04e085e0c3166794618656aa24864ba992ad9b077207da5baf68a3d00acc09e9",
  "url": "https://osv.dev/vulnerability/CVE-2026-38446",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-38446",
    "summary": "A stored cross-site scripting (XSS) vulnerability exists in osTicket 1.18.3 due to improper sanitization of the thread entry title field. User-controlled input in the title is stored without adequate HTML escaping and later rendered in multiple staff-facing templates without proper output encoding. An attacker can inject arbitrary JavaScript by submitting a crafted ticket reply or email with a malicious subject line.",
    "evidence": "osv:CVE-2026-38446",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-38446",
      "aliases": [
        "CVE-2026-38446"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/osticket/osticket",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1e39bf1cf78fa298285f19b98f6a6dbb6808de19"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "1e39bf1cf78fa298285f19b98f6a6dbb6808de19"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.17.7",
            "v1.17.6",
            "v1.17.5",
            "v1.17.4",
            "v1.17.3",
            "v1.17.2",
            "v1.17.1",
            "v1.17",
            "v1.17-rc4",
            "v1.16.3",
            "v1.17-rc3",
            "v1.17-rc2",
            "v1.17-rc1",
            "v1.16.2",
            "v1.16.1",
            "v1.16",
            "v1.15.3.1",
            "v1.12.2",
            "v1.15.3",
            "v1.15.2",
            "v1.15.1",
            "v1.14.4",
            "v1.14.3",
            "v1.14.2",
            "v1.14.1",
            "v1.14",
            "v1.14-rc2",
            "v1.14.-rc1",
            "v1.12.1",
            "v1.12",
            "v1.11",
            "v1.11.0-rc1",
            "v1.10.1",
            "v1.10",
            "v1.9.5.1",
            "v1.10-rc.3",
            "v1.9.12",
            "v1.9.11",
            "v1.9.9",
            "v1.9.8.1",
            "v1.9.8",
            "v1.9.7",
            "v1.9.6",
            "v1.9.5",
            "v1.9.4",
            "v1.9.4-rc5",
            "v1.9.3",
            "v1.9.2",
            "v1.9.1",
            "v1.9.0",
            "v1.9-rc",
            "v1.8.2-dpr",
            "v1.8.1.2",
            "v1.8.0.3",
            "v1.8.0.1",
            "v1.8.0.2",
            "v1.8.0",
            "v1.8.0-rc2",
            "v1.8.0-rc1",
            "v1.8-dpr"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-38446.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:40.494953099Z",
      "provider": "osv",
      "references": [
        "https://github.com/fr3akhacks/cve-disclosures/blob/master/osTicket/CVE-2026-38446.md",
        "https://github.com/osTicket/osTicket/blob/v1.18.3/include/staff/templates/reply-expand.tmpl.php",
        "https://github.com/osTicket/osTicket/blob/v1.18.3/include/staff/templates/thread-entries.tmpl.php",
        "https://github.com/osTicket/osTicket/blob/v1.18.3/include/staff/templates/thread-entry.tmpl.php#L84",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/38xxx/CVE-2026-38446.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-38446",
        "https://github.com/osTicket/osTicket/commit/1e39bf1cf78fa298285f19b98f6a6dbb6808de19"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/38xxx/CVE-2026-38446.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-38446",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 507943,
  "published_at": "2026-08-03T00:00:00+00:00"
}