{"schema_version":1,"title":"Jupyter Nbconvert vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 4 vulnerabilities in Jupyter Nbconvert: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-114140, was published on 21 October 2026. 1 vulnerability in the last four weeks, up from none in the four before.","url":"https://junglewise.ai/threats/technologies/jupyter-nbconvert","json_url":"https://junglewise.ai/threats/technologies/jupyter-nbconvert.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/jupyter-nbconvert","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","thin":true,"counts":{"high":1,"all_time":4,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":1,"last_90_days":1,"last_365_days":4},"latest":[{"cve":"CVE-2026-114140","cvss":4,"epss":0.0031,"slug":"cve-2026-114140-the-nbconvert-tool-jupyter-nbconvert-converts-jupyter-notebooks","title":"Jupyter nbconvert path traversal via output filename metadata","severity":"high","exploited":false,"published_at":"2026-10-21T21:17:56.52+00:00","url":"https://junglewise.ai/threats/cve-2026-114140-the-nbconvert-tool-jupyter-nbconvert-converts-jupyter-notebooks"},{"cve":"CVE-2026-6658","cvss":5.4,"epss":0.0016,"slug":"cve-2026-6658-jupyter-nbconvert-cross-site-scripting-in-mermaid-html-export","title":"Jupyter nbconvert Cross-site Scripting in Mermaid HTML export","severity":"medium","exploited":false,"published_at":"2026-06-26T10:16:22.81+00:00","url":"https://junglewise.ai/threats/cve-2026-6658-jupyter-nbconvert-cross-site-scripting-in-mermaid-html-export"},{"cve":"CVE-2026-39378","cvss":6.5,"epss":0.0031,"slug":"cve-2026-39378-nbconvert-has-an-arbitrary-file-read-via-path-traversal-in","title":"nbconvert has an Arbitrary File Read via Path Traversal in HTMLExporter Image Embedding","severity":"medium","exploited":false,"published_at":"2026-04-21T01:16:06.073+00:00","url":"https://junglewise.ai/threats/cve-2026-39378-nbconvert-has-an-arbitrary-file-read-via-path-traversal-in"},{"cve":"CVE-2026-39377","cvss":6.5,"epss":0.0027,"slug":"cve-2026-39377-nbconvert-has-an-arbitrary-file-write-via-path-traversal-in-cell","title":"nbconvert has an Arbitrary File Write via Path Traversal in Cell Attachment Filenames","severity":"medium","exploited":false,"published_at":"2026-04-21T01:16:05.937+00:00","url":"https://junglewise.ai/threats/cve-2026-39377-nbconvert-has-an-arbitrary-file-write-via-path-traversal-in-cell"}],"weekly":[{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-05","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-12","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-19","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-10-26","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-02","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-09","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"Jupyter-Server","slug":"jupyter-server","vulnerabilities":9,"url":"https://junglewise.ai/threats/technologies/jupyter-server"},{"name":"Jupyter Enterprise Gateway","slug":"enterprise-gateway","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/enterprise-gateway"}],"technology":{"hub":true,"name":"Jupyter Nbconvert","slug":"jupyter-nbconvert","vendor":{"hub":true,"name":"Jupyter","slug":"jupyter","url":"https://junglewise.ai/threats/vendors/jupyter"},"aliases":[],"category":"library","description":"nbconvert is a tool for converting Jupyter notebooks to various output formats including HTML, PDF, and Markdown.","url":"https://junglewise.ai/threats/technologies/jupyter-nbconvert"},"most_severe":[{"cve":"CVE-2026-114140","cvss":4,"epss":0.0031,"slug":"cve-2026-114140-the-nbconvert-tool-jupyter-nbconvert-converts-jupyter-notebooks","title":"Jupyter nbconvert path traversal via output filename metadata","severity":"high","exploited":false,"published_at":"2026-10-21T21:17:56.52+00:00","url":"https://junglewise.ai/threats/cve-2026-114140-the-nbconvert-tool-jupyter-nbconvert-converts-jupyter-notebooks"},{"cve":"CVE-2026-39378","cvss":6.5,"epss":0.0031,"slug":"cve-2026-39378-nbconvert-has-an-arbitrary-file-read-via-path-traversal-in","title":"nbconvert has an Arbitrary File Read via Path Traversal in HTMLExporter Image Embedding","severity":"medium","exploited":false,"published_at":"2026-04-21T01:16:06.073+00:00","url":"https://junglewise.ai/threats/cve-2026-39378-nbconvert-has-an-arbitrary-file-read-via-path-traversal-in"},{"cve":"CVE-2026-39377","cvss":6.5,"epss":0.0027,"slug":"cve-2026-39377-nbconvert-has-an-arbitrary-file-write-via-path-traversal-in-cell","title":"nbconvert has an Arbitrary File Write via Path Traversal in Cell Attachment Filenames","severity":"medium","exploited":false,"published_at":"2026-04-21T01:16:05.937+00:00","url":"https://junglewise.ai/threats/cve-2026-39377-nbconvert-has-an-arbitrary-file-write-via-path-traversal-in-cell"},{"cve":"CVE-2026-6658","cvss":5.4,"epss":0.0016,"slug":"cve-2026-6658-jupyter-nbconvert-cross-site-scripting-in-mermaid-html-export","title":"Jupyter nbconvert Cross-site Scripting in Mermaid HTML export","severity":"medium","exploited":false,"published_at":"2026-06-26T10:16:22.81+00:00","url":"https://junglewise.ai/threats/cve-2026-6658-jupyter-nbconvert-cross-site-scripting-in-mermaid-html-export"}],"generated_at":"2026-11-09T03:07:00.176479+00:00"}