User profile page vulnerable to Cross Site Scripting (XSS) in flaskBlog

{
  "id": "f94c03f38b41cd3f62251b47f46fe7af29f5b3e926bdb087ebaf58ff301ef7b0",
  "url": "https://osv.dev/vulnerability/CVE-2024-22414",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "User profile page vulnerable to Cross Site Scripting (XSS) in flaskBlog",
    "summary": "flaskBlog is a simple blog app built with Flask. Improper storage and rendering of the `/user/` page allows a user's comments to execute arbitrary javascript code. The html template `user.html` contains the following code snippet to render comments made by a user: `{{comment[2]|safe}} `. Use of the \"safe\" tag causes flask to _not_ escape the rendered content. To remediate this, simply remove the `|safe` tag from the HTML above. No fix is is available and users are advised to manually edit their installation.",
    "evidence": "osv:CVE-2024-22414",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2024-22414",
      "aliases": [
        "CVE-2024-22414",
        "GHSA-mrcw-j96f-p6v6"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/dogukanurker/flaskblog",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "571a251045877de6f537a259f1937f4a7ca873a4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:dogukanurker:flaskblog:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.1.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.1.0",
            "1.0.9",
            "1.0.8",
            "1.0.7",
            "1.0.6",
            "1.0.5",
            "1.0.4",
            "1.0.3",
            "1.0.2",
            "1.0.1",
            "1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-22414.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.265379459Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/22xxx/CVE-2024-22414.json",
        "https://github.com/DogukanUrker/flaskBlog/security/advisories/GHSA-mrcw-j96f-p6v6",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-22414"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "GitHub_M",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "*"
                  },
                  {
                    "last_affected": "*"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandaloneSingleVersion"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/22xxx/CVE-2024-22414.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-22414",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493780,
  "published_at": "2024-01-17T20:25:29.629+00:00"
}