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CVE PROGRAM SOURCE RECORD9.3 Critical

CVE-2026-54527

JupyterLab Git: Stored XSS leading to RCE

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

jupyterlab jupyterlab-git

  • >= 0.30.0b3, < 0.54.0affected

References