Description
Jupyter Core is a package for the core common functionality of Jupyter projects. Jupyter Core prior to version 4.11.2 contains an arbitrary code execution vulnerability in `jupyter_core` that stems from `jupyter_core` executing untrusted files in CWD. This vulnerability allows one user to run code as another. Version 4.11.2 contains a patch for this issue. There are no known workarounds.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| jupyter | jupyter_core | < 4.11.2 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | jupyter-core | 4.11.2-1 | — |
| Debian 13 | jupyter-core | 4.11.2-1 | — |
| Debian 12 | jupyter-core | 4.11.2-1 | — |
| Debian 11 | jupyter-core | 4.7.1-1+deb11u1 | DSA-5422-1 |
| Debian 10 | jupyter-core | 4.4.0-2+deb10u1 | DLA-3195-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | jupyter-core | 4.9.1-1ubuntu0.1~esm1 | USN-6153-1 |
| Ubuntu Pro 20.04 LTS | jupyter-core | 4.6.3-3ubuntu0.1~esm1 | USN-6153-1 |
| Ubuntu Pro 18.04 LTS | jupyter-core | 4.4.0-2ubuntu0.1~esm1 | USN-6153-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | jupyter-core | < 4.11.2 | 4.11.2 | GHSA-m678-f26j-3hrp |
Advisories 3
- USN-6153-1 jupyter-core vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-5422-1 jupyter-core - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3195-1 jupyter-core - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://github.com/jupyter/jupyter_core/security/advisories/GHSA-m678-f26j-3hrp
- https://github.com/jupyter/jupyter_core/commit/1118c8ce01800cb689d51f655f5ccef19516e283
- [debian-lts-announce] 20221117 [SECURITY] [DLA 3195-1] jupyter-core security update mailing-list
- GLSA-202301-04 vendor-advisory
- FEDORA-2023-de87bd076b vendor-advisory
- FEDORA-2023-d966145959 vendor-advisory
- DSA-5422 vendor-advisory