{"cve":"CVE-2026-54528","nvd":{"published":"2026-07-08T21:16:49.407","modified":"2026-10-25T17:10:00.197","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","score":7.1},"cwes":["CWE-178"],"references":["https://github.com/jupyterlab/jupyterlab-git/commit/460035275b5963dc96e364e60ba6a73717fbd033","https://github.com/jupyterlab/jupyterlab-git/releases/tag/v0.54.0","https://github.com/jupyterlab/jupyterlab-git/security/advisories/GHSA-436q-jwfr-rm2h","https://github.com/jupyterlab/jupyterlab-git/security/advisories/GHSA-436q-jwfr-rm2h"],"products":["jupyter:jupyterlab-git"],"source":"nvd","synced_at":"2026-10-25T17:50:06.907763985+00:00"},"epss":{"cve":"CVE-2026-54528","score":0.00411,"percentile":0.35043,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-436q-jwfr-rm2h","url":"https://osv.dev/vulnerability/GHSA-436q-jwfr-rm2h","summary":"jupyterlab-git excluded_paths Case-Sensitivity Bypass Allows Reading Excluded Directories","modified":"2026-07-13T16:42:59.177387872Z","packages":[{"ecosystem":"PyPI","name":"jupyterlab-git","purl":"pkg:pypi/jupyterlab-git","ranges":["<0.54.0"],"fixed":["0.54.0"]}]},{"id":"PYSEC-2026-2539","url":"https://osv.dev/vulnerability/PYSEC-2026-2539","summary":"jupyterlab-git excluded_paths Case-Sensitivity Bypass Allows Reading Excluded Directories","modified":"2026-07-13T16:31:58.975613285Z","packages":[{"ecosystem":"PyPI","name":"jupyterlab-git","purl":"pkg:pypi/jupyterlab-git","ranges":["<0.54.0"],"fixed":["0.54.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}