CVE-2026-54527

unknown

Published 2026-06-19 · Modified 2026-06-19

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

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Description

jupyterlab-git extension: Stored XSS leading to RCE

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Package impact

Ecosystem	Package	Vulnerable	Fixed
PyPI	jupyterlab-git	`>=0.30.0b3,<0.54.0`	`0.54.0`
PyPI	jupyterlab-git-core	`>=0.30.0b3,<0.54.0`	`0.54.0`
npm	@jupyterlab/git	`>=0.30.0b3,<0.54.0`	`0.54.0`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.