CVE-2026-54527

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.

CVSS v3 9.0 CRITICAL

9.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.3 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/jupyterlab/jupyterlab-git/commit/c6d37b88f36aa59aee317930b95e427fb9d6b09b	Patch
https://github.com/jupyterlab/jupyterlab-git/releases/tag/v0.54.0	Release Notes
https://github.com/jupyterlab/jupyterlab-git/security/advisories/GHSA-f962-v9hr-pfg5	Exploit Mitigation Vendor Advisory
https://github.com/jupyterlab/jupyterlab-git/security/advisories/GHSA-f962-v9hr-pfg5	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:jupyter:jupyterlab-git::::::::
	cpe:2.3:a:jupyter:jupyterlab-git:0.30.0:-::::::
	cpe:2.3:a:jupyter:jupyterlab-git:0.30.0:beta3::::::

History

No history.

Information

Published : 2026-07-08 21:16

Updated : 2026-07-15 20:46

NVD link : CVE-2026-54527

Mitre link : CVE-2026-54527

CVE.ORG link : CVE-2026-54527

JSON object : View

Products Affected

jupyter

jupyterlab-git

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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