{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "d7231d81a914f1314a218d5e8fde6e0341391ccd"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v0.17.3",
                "range": [
                  {
                    "fixed": "d2485910010b1671a6e4341ab36cd199b7868e8d"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "d7231d81a914f1314a218d5e8fde6e0341391ccd"
            },
            {
              "fixed": "d2485910010b1671a6e4341ab36cd199b7868e8d"
            }
          ],
          "repo": "https://github.com/writefreely/writefreely",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-cwxm-8ch5-j2vh"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126498.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "range": [
              {
                "fixed": "0.17.3"
              }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
          }
        ]
      },
      {
        "extracted_events": [
          {
            "range": [
              {
                "fixed": "0.17.3"
              }
            ],
            "source": "DESCRIPTION"
          }
        ]
      }
    ]
  },
  "details": "WriteFreely before 0.17.3 contains a stored cross-site scripting vulnerability that allows authenticated authors to inject HTML by supplying a malicious post slug via the CreatePost API. The raw slug is concatenated into an anchor by augmentReadingDestination() for paid-shortcode posts, executing script for RSS/Atom feed readers, newsletter recipients and ActivityPub viewers.",
  "id": "CVE-2026-126498",
  "modified": "2026-11-12T02:31:03.118144415Z",
  "published": "2026-11-11T00:58:50.974Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126498.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/writefreely/writefreely/releases/tag/v0.17.3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/writefreely/writefreely/security/advisories/GHSA-cwxm-8ch5-j2vh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126498"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/writefreely-before-0.17.3-stored-xss-via-unsanitized-post-slug"
    },
    {
      "type": "FIX",
      "url": "https://github.com/writefreely/writefreely/commit/d7231d81a914f1314a218d5e8fde6e0341391ccd"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/writefreely/writefreely"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/writefreely/writefreely/blob/v0.17.2/database.go#L702-L705"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/writefreely/writefreely/blob/v0.17.2/postrender.go#L117-L121"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "WriteFreely before 0.17.3 Stored XSS via Unsanitized Post Slug"
}