{"answers":{"affected":"3 open source packages ship an affected version, including mistune. It affects 2 products.","exploited":"There is no known exploitation of CVE-2017-16876 in the wild and no public exploit code.","fix":"Upgrade mistune to 0.8.1 or later.","what":"CVE-2017-16876 is a medium-severity cross-site scripting vulnerability in Fedoraproject Fedora, published on 29 Dec 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2017-16876 and fix it if it is affected.\n\nWhat it is: CVE-2017-16876 is a medium-severity cross-site scripting vulnerability in Fedoraproject Fedora, published on 29 Dec 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2017-16876 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- mistune (PyPI): affected all versions; fixed in 0.8.1\n- mistune (PyPI): affected all versions; fixed in 0.8.1\n- mistune (PyPI): affected all versions; fixed in 0.8.1\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-2017-16876/ (Markdown: https://insights.sbomify.com/CVE-2017-16876/index.md)","id":"CVE-2017-16876","markdown":"https://insights.sbomify.com/CVE-2017-16876/index.md","name":"CVE-2017-16876","record":{"aliases":["DEBIAN-CVE-2017-16876","GHSA-98gj-wwxm-cj3h","PYSEC-2017-18","UBUNTU-CVE-2017-16876"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Python Markdown parser","requires_auth":"none","summary":"Remote attackers can inject arbitrary web script or HTML via the key argument in the Mistune Markdown parser library.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"mistune","vendor":"mistune_project"}],"cvss":{"score":6.1,"severity":"medium","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Cross-site scripting (XSS) vulnerability in the _keyify function in mistune.py in Mistune before 0.8.1 allows remote attackers to inject arbitrary web script or HTML by leveraging failure to escape the \"key\" argument.","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":"mistune Cross-site scripting (XSS) vulnerability","id":"CVE-2017-16876","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"fedoraproject:fedora","products":["fedoraproject:fedora"],"type":"xss","year":"2017"},"n_packages":3,"n_references":4,"next":{"headline":"Next.js Directory Traversal Vulnerability","id":"CVE-2017-16877"},"packages":[{"ecosystem":"PyPI","fixed":["0.8.1"],"introduced":["0"],"last_affected":[],"package":"mistune","purl":null,"source":"GHSA-98gj-wwxm-cj3h"},{"ecosystem":"PyPI","fixed":["0.8.1"],"introduced":["0"],"last_affected":[],"package":"mistune","purl":"pkg:pypi/mistune","source":"GHSA-98gj-wwxm-cj3h"},{"ecosystem":"PyPI","fixed":["0.8.1"],"introduced":["0"],"last_affected":[],"package":"mistune","purl":"pkg:pypi/mistune","source":"PYSEC-2017-18"}],"prev":{"headline":"Integer overflow in n/a","id":"CVE-2017-16875"},"products":["n/a"],"published":"2017-12-29","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"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":"2024-08-05","vendors":["n/a"]},"summary":"Remote attackers can inject arbitrary web script or HTML via the key argument in the Mistune Markdown parser library.","url":"https://insights.sbomify.com/CVE-2017-16876/"}