{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.0.0"
              },
              {
                "fixed": "2.0.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "592d4dfa24044c671690e1533f8ce9877011f0a7"
            },
            {
              "fixed": "b2c91c021fc5ab7e91feb4927c4c676f77034ac5"
            },
            {
              "fixed": "9fd68157031e0e65ffbb1779fe1b3803da7eb55b"
            }
          ],
          "repo": "https://github.com/chamilo/chamilo-lms",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-x88v-rg6r-vqq6"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45143.json"
  },
  "details": "Chamilo LMS is an open-source learning management system. From 2.0.0 through at least 2.1.0, Chamilo LMS stores private Message.content without server-side sanitization and renders it as HTML in assets/vue/views/message/MessageShow.vue and public/main/template/default/message/view_message.html.twig. An authenticated low-privilege user, including a student, can directly address crafted message content to an administrator because the message creation flow permits a sender to select another user as the recipient. The content executes in the recipient's browser when the recipient opens the routine inbox or message view, without requiring a link click, and can expose session credentials or permit actions as the administrator. This vulnerability is fixed in 2.0.1.",
  "id": "CVE-2026-45143",
  "modified": "2026-09-19T03:30:35.345142906Z",
  "published": "2026-09-17T20:09:57.972Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45143.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-x88v-rg6r-vqq6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45143"
    },
    {
      "type": "FIX",
      "url": "https://github.com/chamilo/chamilo-lms/commit/b2c91c021fc5ab7e91feb4927c4c676f77034ac5"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Chamilo LMS: Student-to-admin stored XSS in private messages via v-html"
}