# JupyterLab: Argument injection in JupyterLab extension uninstall exposes server-readable files and internal URLs

Advisory record · `GHSA-3325-v43h-43rv`

- **Identifiers:** `GHSA-3325-v43h-43rv` · `BIT-jupyterlab-2026-102904` · `CVE-2026-102904` · `PYSEC-2026-4055`
- **State:** Confirmed
- **Severity:** CVSS 5.4 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-88](https://cwe.mitre.org/data/definitions/88.html) · [CWE-209](https://cwe.mitre.org/data/definitions/209.html) · [CWE-918](https://cwe.mitre.org/data/definitions/918.html)
- **Tags:** [Command injection](https://agentprime.io/advisories/tag/command-injection.md) · [Information disclosure](https://agentprime.io/advisories/tag/info-disclosure.md) · [Server-side request forgery (SSRF)](https://agentprime.io/advisories/tag/ssrf.md)
- **Published:** 1 Oct 2026
- **Updated:** 6 Oct 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 1 Oct 2026, 15:21 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `jupyterlab` (PyPI): affected `>=4.6.0, <4.6.4 || >=4.0.0, <4.5.11`; fixed in `4.6.4`, `4.5.11`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 5.4 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0021, the 10th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:09 UTC: First seen by agentprime
- 31 Oct 2026, 14:09 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-3325-v43h-43rv)

## Sources

- [GitHub Advisory Database: GHSA-3325-v43h-43rv](https://github.com/advisories/GHSA-3325-v43h-43rv)
- [OSV: GHSA-3325-v43h-43rv](https://osv.dev/vulnerability/GHSA-3325-v43h-43rv)
- <https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-3325-v43h-43rv>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-102904>
- <https://github.com/jupyterlab/jupyterlab/commit/9e1951e57da499ca66ef5e0caf68e71ad2e3d1a5>
- <https://github.com/jupyterlab/jupyterlab/commit/a274a8276b9185d03efd4c3c20713d3137ac49e6>
- <https://github.com/jupyterlab/jupyterlab/commit/e277bc958e737130ac47b6c5078d08b29298828f>
- <https://github.com/jupyterlab/jupyterlab>
- <https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.11>
- <https://github.com/jupyterlab/jupyterlab/releases/tag/v4.6.4>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-3325-v43h-43rv>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-3325-v43h-43rv/>. Everything for agents: <https://agentprime.io/llms.txt>.