https://db.gcve.eu/rss/recent/all/10 Most recent entries from all 2026-10-14T17:10:32.196240+00:00 Vulnerability-Lookup info@gcve.eu python-feedgen Contains only the most 10 recent entries. https://db.gcve.eu/vuln/cve-2021-41134 CVE-2021-41134 — Stored XSS in Jupyter nbdime 2026-10-14T17:10:32.198362+00:00

Affected: jupyter nbdime

nbdime provides tools for diffing and merging of Jupyter Notebooks. In affected versions a stored cross-site scripting (XSS) issue exists within the Jupyter-owned nbdime project. It appears that when reading the file name and path from disk, the extension does not sanitize the string it constructs before returning it to be displayed. The diffNotebookCheckpoint function within nbdime causes this issue. When attempting to display the name of the local notebook (diffNotebookCheckpoint), nbdime appears to simply append .ipynb to the name of the input file. The NbdimeWidget is then created, and the base string is passed through to the request API function. From there, the frontend simply renders the HTML tag and anything along with it. Users are advised to patch to the most recent version of the affected product.

 https://db.gcve.eu/vuln/ghsa-p6rw-44q7-3fw4 GHSA-p6rw-44q7-3fw4 — Stored XSS in Jupyter nbdime 2026-10-14T17:10:32.198445+00:00

Affected: PyPI: nbdime, npm: nbdime, npm: nbdime-jupyterlab

### Impact

Improper handling of user controlled input caused a stored cross-site scripting (XSS) vulnerability. All previous versions of nbdime are affected.

### Patches

Security patches will be released for each of the major versions of the nbdime packages since version 1.x of the nbdime python package.

#### Python - nbdime 1.x: Patched in v. 1.1.1 - nbdime 2.x: Patched in v. 2.1.1 - nbdime 3.x: Patched in v. 3.1.1

#### npm - nbdime 6.x version: Patched in 6.1.2 - nbdime 5.x version: Patched in 5.0.2 - nbdime-jupyterlab 1.x version: Patched in 1.0.1 - nbdime-jupyterlab 2.x version: Patched in 2.1.1

### For more information If you have any questions or comments about this advisory email us at [security@ipython.org](mailto:security@ipython.org).

 https://db.gcve.eu/vuln/pysec-2021-428 PYSEC-2021-428 2026-10-14T17:10:32.198489+00:00

Affected: PyPI: nbdime

nbdime provides tools for diffing and merging of Jupyter Notebooks. In affected versions a stored cross-site scripting (XSS) issue exists within the Jupyter-owned nbdime project. It appears that when reading the file name and path from disk, the extension does not sanitize the string it constructs before returning it to be displayed. The diffNotebookCheckpoint function within nbdime causes this issue. When attempting to display the name of the local notebook (diffNotebookCheckpoint), nbdime appears to simply append .ipynb to the name of the input file. The NbdimeWidget is then created, and the base string is passed through to the request API function. From there, the frontend simply renders the HTML tag and anything along with it. Users are advised to patch to the most recent version of the affected product.