Jupyter Nbconvert vulnerabilities

CVE-2026-114140 [HIGH] CWE-22 CVE-2026-114140: The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja templates. From 5.4.0 until 7.17.2, ExtractOutputPreprocessor in nbconvert/preprocessors/extractoutput.py joins the attacker-controlled cell output metadata filename to output_files_dir without limiting the result to the intended directory. When a vic

CVE-2025-53000 [HIGH] CWE-427 CVE-2025-53000: The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja templates. Versions of nbconvert up to and including 7.16.6 on Windows have a vulnerability in which converting a notebook containing SVG output to a PDF results in unauthorized code execution. Specifically, a third party can create a `inkscape.bat` fi

CVE-2026-39378 [MEDIUM] CWE-22 CVE-2026-39378: The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja templates. In versions 6.5 through 7.17.0, when `HTMLExporter.embed_images=True`, nbconvert's markdown renderer allows arbitrary file read via path traversal in image references. A malicious notebook can exfiltrate sensitive files from the conversion

CVE-2026-39377 [MEDIUM] CWE-22 CVE-2026-39377: The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja templates. Versions 6.5 through 7.17.0 allow arbitrary file writes to locations outside the intended output directory when processing notebooks containing crafted cell attachment filenames. The `ExtractAttachmentsPreprocessor` passes attachment filena

CVE-2026-6658 [MEDIUM] CWE-79 jupyter/nbconvert allows Cross-site Scripting (XSS) via unsanitized `text/vnd.mermaid` output in HTML exports jupyter/nbconvert allows Cross-site Scripting (XSS) via unsanitized `text/vnd.mermaid` output in HTML exports A vulnerability in jupyter/nbconvert versions ` tag. This vulnerability impacts any server using nbconvert to render notebooks as HTML, allowing attackers to execute arbitrary JavaScript in the context of users viewing the HTML export.

CVE-2021-32862 [MEDIUM] CWE-79 CVE-2021-32862: The GitHub Security Lab discovered sixteen ways to exploit a cross-site scripting vulnerability in n The GitHub Security Lab discovered sixteen ways to exploit a cross-site scripting vulnerability in nbconvert. When using nbconvert to generate an HTML version of a user-controllable notebook, it is possible to inject arbitrary HTML which may lead to cross-site scripting (XSS) vulnerabilities if these HTML notebooks are served by a web server (eg: nbv