CVE-2026-54527 — JupyterLab Git: Stored XSS leading to RCE
JupyterLab Git is a Git extension for JupyterLab. From 0.30.0b3 before 0.54.0, the PlainTextDiff.ts createHeader() method passes Git filenames directly to innerHTML when renderi…
Published: 2026-07-08 · CVSS: 9.3 · CVSS 4.0
JupyterLab Git is a Git extension for JupyterLab. From 0.30.0b3 before 0.54.0, the PlainTextDiff.ts createHeader() method passes Git filenames directly to innerHTML when rendering renamed files in commit history, allowing a crafted filename to execute JavaScript when a victim views the rename diff in the Git History tab. This issue is fixed in version 0.54.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7