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Medium

Stored Cross-Site Scripting (XSS) in Mezzanine CMS Admin Interface

Type: advisorySources: OSV

Mezzanine CMS, in versions prior to 6.1.1, contains a Stored Cross-Site Scripting (XSS) vulnerability in the admin interface. The vulnerability exists in the "displayable_links_js" function, which fails to properly sanitize blog post titles before including them in JSON responses served via "/admin/displayable_links.js". An authenticated admin user can create a blog post with a malicious JavaScript payload in the title field, then trick another admin user into clicking a direct link to the "/admin/displayable_links.js" endpoint, causing the malicious script to execute in their browser.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2025-6050
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 05:05 UTC · Revision 1

Source evidence

Stored Cross-Site Scripting (XSS) in Mezzanine CMS Admin Interface

core-osv · Original source

Published 17 Jun 2025, 11:06 UTC

Mezzanine CMS, in versions prior to 6.1.1, contains a Stored Cross-Site Scripting (XSS) vulnerability in the admin interface. The vulnerability exists in the "displayable_links_js" function, which fails to properly sanitize blog post titles before including them in JSON responses served via "/admin/displayable_links.js". An authenticated admin user can create a blog post with a malicious JavaScript payload in the title field, then trick another admin user into clicking a direct link to the "/admin/displayable_links.js" endpoint, causing the malicious script to execute in their browser.

osv:CVE-2025-6050
Complete source record
{
  "id": "d922a3eedcadece3d3f057e690efd7a5840b171fc3afc4e95ea4d9ff4633a9c4",
  "url": "https://osv.dev/vulnerability/CVE-2025-6050",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Stored Cross-Site Scripting (XSS) in Mezzanine CMS Admin Interface",
    "summary": "Mezzanine CMS, in versions prior to 6.1.1, contains a Stored Cross-Site Scripting (XSS) vulnerability in the admin interface. The vulnerability exists in the \"displayable_links_js\" function, which fails to properly sanitize blog post titles before including them in JSON responses served via \"/admin/displayable_links.js\". An authenticated admin user can create a blog post with a malicious JavaScript payload in the title field, then trick another admin user into clicking a direct link to the \"/admin/displayable_links.js\" endpoint, causing the malicious script to execute in their browser.",
    "evidence": "osv:CVE-2025-6050",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-6050",
      "aliases": [
        "CVE-2025-6050",
        "GHSA-7pr5-w74r-jjj7",
        "PYSEC-2025-236"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/stephenmcd/mezzanine",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "898630d8df48cf3ddb8b9942f59168b93216e3f8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.1"
                      },
                      {
                        "fixed": "6.1.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "898630d8df48cf3ddb8b9942f59168b93216e3f8"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "cpe": "cpe:2.3:a:jupo:mezzanine:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "6.1.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v6.1.0",
            "v6.0.1",
            "v5.1.1",
            "v5.1.0",
            "v5.0.0-alpha.1",
            "v4.3.0",
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            "0.12.4",
            "v0.12",
            "0.12",
            "v0.11.10",
            "0.11.10",
            "v0.11.9",
            "0.11.9",
            "v0.11.8",
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6050.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.203742231Z",
      "provider": "osv",
      "references": [
        "https://github.com/stephenmcd/mezzanine/discussions/2080",
        "https://pypi.python.org",
        "https://advisory.checkmarx.net/advisory/CVE-2025-6050/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6050.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-6050",
        "https://github.com/stephenmcd/mezzanine/commit/898630d8df48cf3ddb8b9942f59168b93216e3f8",
        "https://github.com/stephenmcd/mezzanine"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "Checkmarx",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6050.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-6050",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 500432,
  "published_at": "2025-06-17T11:06:12.36+00:00"
}