{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.54.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "460035275b5963dc96e364e60ba6a73717fbd033"
            },
            {
              "fixed": "ccbf077d2149c6b2ed35eae8a7123ae129c022aa"
            }
          ],
          "repo": "https://github.com/jupyterlab/jupyterlab-git",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-436q-jwfr-rm2h"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-178"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54528.json"
  },
  "details": "JupyterLab Git is a Git extension for JupyterLab. Prior to 0.54.0, jupyterlab-git uses fnmatch.fnmatchcase() in GitHandler.prepare() in jupyterlab_git/handlers.py to enforce excluded_paths, allowing an authenticated user on a case-insensitive filesystem to vary URL path casing and read excluded directories. This issue is fixed in version 0.54.0.",
  "id": "CVE-2026-54528",
  "modified": "2026-07-15T01:49:14.647468562Z",
  "published": "2026-07-08T21:04:18.613Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/jupyterlab/jupyterlab-git/releases/tag/v0.54.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54528.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/jupyterlab/jupyterlab-git/security/advisories/GHSA-436q-jwfr-rm2h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54528"
    },
    {
      "type": "FIX",
      "url": "https://github.com/jupyterlab/jupyterlab-git/commit/460035275b5963dc96e364e60ba6a73717fbd033"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "jupyterlab-git excluded_paths Case-Sensitivity Bypass Allows Reading Excluded Directories"
}