CVE-2023-49080 Jupyter Server errors include tracebacks with path information
Authenticated users can view server file paths in error tracebacks, potentially revealing internal directory structures.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-49080?
CVE-2023-49080 is a low-severity vulnerability in jupyter-server jupyter_server, published on 4 Dec 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The Jupyter Server provides the backend (i.e. the core services, APIs, and REST endpoints) for Jupyter web applications like Jupyter notebook, JupyterLab, and Voila. Unhandled errors in API requests coming from an authenticated user include traceback information, which can include path information. There is no known mechanism by which to trigger these errors without authentication, so the paths revealed are not considered particularly sensitive, given that the requesting user has arbitrary execution permissions already in the same environment. A fix has been introduced in commit `0056c3aa52` which no longer includes traceback information in JSON error responses. For compatibility, the traceback field is present, but always empty. This commit has been included in version 2.11.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Weakness: CWE-209
Which versions are affected by CVE-2023-49080?
3 open source packages ship an affected version, including jupyter-server. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
jupyter-server PyPI | All versions | 2.11.2 |
jupyter-server PyPI | All versions | 2.11.2 |
jupyter-server PyPI | All versions | 2.11.2 |
Products include Jupyter Jupyter Server.
How do I fix CVE-2023-49080?
Upgrade jupyter-server to 2.11.2 or later.
Is CVE-2023-49080 being exploited?
There is no known exploitation of CVE-2023-49080 in the wild and no public exploit code.
Other vulnerabilities in jupyter-server jupyter_server
- CVE-2026-44727 Jupyter Server: Stored XSS in `NbconvertFileHandler` / `NbconvertPostHandler` via missing `sandbox` CSP
- CVE-2026-35397 jupyter-server path traversal allows access to sibling directories sharing root_dir name prefix
- CVE-2026-40110 jupyter-server CORS origin validation bypass via unanchored regex in allow_origin_pat
- CVE-2026-40934 jupyter-server authentication cookies remain valid after password reset due to static cookie secret
- CVE-2024-35178 Jupyter server on Windows discloses Windows user password hash
Sources
Also known as DEBIAN-CVE-2023-49080, GHSA-h56g-gq9v-vc8r, PYSEC-2023-272, UBUNTU-CVE-2023-49080, openSUSE-SU-2024:13489-1.