{"answers":{"affected":"3 open source packages ship an affected version, including nbconvert. It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-32862 in the wild and no public exploit code.","fix":"Upgrade nbconvert to a fixed version for your release line: 6.3.0a0 or 6.5.1.","what":"CVE-2021-32862 is a high-severity cross-site scripting vulnerability in Debian Debian Linux, published on 18 Aug 2022. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-32862 and fix it if it is affected.\n\nWhat it is: CVE-2021-32862 is a high-severity cross-site scripting vulnerability in Debian Debian Linux, published on 18 Aug 2022. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-32862 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- nbconvert (PyPI): affected all versions; fixed in 6.3.0a0\n- nbconvert (PyPI): affected all versions; fixed in 6.5.1\n- nbconvert (PyPI): affected all versions; fixed in 6.5.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2021-32862/ (Markdown: https://insights.sbomify.com/CVE-2021-32862/index.md)","id":"CVE-2021-32862","markdown":"https://insights.sbomify.com/CVE-2021-32862/index.md","name":"CVE-2021-32862","record":{"aliases":["DEBIAN-CVE-2021-32862","DLA-3442-1","DLA-3863-1","GHSA-9jmq-rx5f-8jwq","GHSA-h274-fcvj-h2wm","PYSEC-2022-249","UBUNTU-CVE-2021-32862"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Jupyter nbconvert library","requires_auth":"low_privilege","summary":"Attackers can inject arbitrary HTML into Jupyter notebooks converted to HTML, leading to cross-site scripting when served by web servers.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"nbconvert","vendor":"jupyter"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"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: nbviewer).","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"nbconvert vulnerable to cross-site scripting (XSS) via multiple exploit paths","id":"CVE-2021-32862","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"debian:debian_linux","products":["debian:debian_linux"],"type":"xss","year":"2021"},"n_packages":3,"n_references":3,"next":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2021-32863"},"packages":[{"ecosystem":"PyPI","fixed":["6.3.0a0"],"introduced":["0"],"last_affected":[],"package":"nbconvert","purl":"pkg:pypi/nbconvert","source":"PYSEC-2022-249"},{"ecosystem":"PyPI","fixed":["6.5.1"],"introduced":["0"],"last_affected":[],"package":"nbconvert","purl":null,"source":"GHSA-9jmq-rx5f-8jwq"},{"ecosystem":"PyPI","fixed":["6.5.1"],"introduced":["0"],"last_affected":[],"package":"nbconvert","purl":"pkg:pypi/nbconvert","source":"GHSA-9jmq-rx5f-8jwq"}],"prev":{"headline":"iziModal vulnerable to Cross-site Scripting","id":"CVE-2021-32860"},"products":["nbconvert"],"published":"2022-08-18","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-02","vendors":["jupyter"]},"summary":"Attackers can inject arbitrary HTML into Jupyter notebooks converted to HTML, leading to cross-site scripting when served by web servers.","url":"https://insights.sbomify.com/CVE-2021-32862/"}