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Vulnerabilities / CVE-2026-54527

critical

CVE-2026-54527

jupyterlab-git: jupyterlab-git-core: @jupyterlab/git: JupyterLab Git: Remote Code Execution via crafted Git filenames in commit history

Published Modified CWE 79
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.0CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
GHSA8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Red Hat9.0CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by GHSA (high), Red Hat (high).

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 packages and fixed versions

SourcePackageFixed in
npm::GitHub Security Advisory npm@jupyterlab/git0.54.0
pip::GitHub Security Advisory pipjupyterlab-git, jupyterlab-git-core0.54.0
Show all 3 entries from 2 sources
SourcePackageFixed in
npm::GitHub Security Advisory npm@jupyterlab/git0.54.0
pip::GitHub Security Advisory pipjupyterlab-git0.54.0
pip::GitHub Security Advisory pipjupyterlab-git-core0.54.0

References

All 12 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.