{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "7.8.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3b986d13677b30fe6651c8c72ebb25957ac0a40d"
            },
            {
              "fixed": "a366291cfcd29ec140911c97ee8e0e794f2a40f9"
            }
          ],
          "repo": "https://github.com/thumbor/thumbor",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-cj54-hpcc-gj6h"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53502.json"
  },
  "details": "Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, file_loader decodes percent-encoded path segments after its root-boundary validation, allowing traversal outside FILE_LOADER_ROOT_PATH through watermark or frame filter input. This issue is fixed in 7.8.0.",
  "id": "CVE-2026-53502",
  "modified": "2026-08-12T03:51:11.038452854Z",
  "published": "2026-07-31T19:03:16.522Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/thumbor/thumbor/releases/tag/7.8.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53502.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53502"
    },
    {
      "type": "FIX",
      "url": "https://github.com/thumbor/thumbor/commit/3b986d13677b30fe6651c8c72ebb25957ac0a40d"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Thumbor has path traversal via post-validation URL decoding bypass in file_loader"
}