9.3Critical
CVE-2026-54527JupyterLab 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.
Weakness (CWE):
CWE-79
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| jupyter | jupyterlab-git | 0.30.1 – < 0.54.0 | |
| jupyterlab | jupyterlab-git | >= 0.30.0b3, < 0.54.0 |
References and patches
CPE matches (NVD) (3)
cpe:2.3:a:jupyter:jupyterlab-git:*:*:*:*:*:*:*:*≥ 0.30.1 < 0.54.0cpe:2.3:a:jupyter:jupyterlab-git:0.30.0:-:*:*:*:*:*:*cpe:2.3:a:jupyter:jupyterlab-git:0.30.0:beta3:*:*:*:*:*:*