{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-39186 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-39186 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-39186 is a medium-severity cross-site scripting vulnerability in miraheze GlobalNewFiles, published on 1 Sep 2021. 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-2021-39186 and fix it if it is affected.\n\nWhat it is: CVE-2021-39186 is a medium-severity cross-site scripting vulnerability in miraheze GlobalNewFiles, published on 1 Sep 2021. 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-2021-39186 in the wild and no public exploit code.\n\nAffected product: miraheze GlobalNewFiles. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2021-39186/ (Markdown: https://insights.sbomify.com/CVE-2021-39186/index.md)","id":"CVE-2021-39186","markdown":"https://insights.sbomify.com/CVE-2021-39186/index.md","name":"CVE-2021-39186","record":{"aliases":["GHSA-57p5-hqjq-h7vg"],"analysis":{"component_type":"cms_plugin","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"MediaWiki extension","requires_auth":"none","summary":"Stored XSS in GlobalNewFiles allows attackers to execute scripts via usernames, affecting MediaWiki users.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"globalnewfiles","vendor":"miraheze"}],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"GlobalNewFiles is a MediaWiki extension maintained by Miraheze. Prior to commit number cee254e1b158cdb0ddbea716b1d3edc31fa4fb5d, the username column of the GlobalNewFiles special page is vulnerable to a stored XSS. Commit number cee254e1b158cdb0ddbea716b1d3edc31fa4fb5d contains a patch. As a workaround, one may disallow \u003c,\u003e (or other characters required to insert html/js) from being used in account names so an XSS is not possible.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Improper Input Validation in GlobalNewFiles","id":"CVE-2021-39186","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"Crash server with query parameter","id":"CVE-2021-39187"},"packages":[],"prev":{"headline":"Default CORS config allows any origin with credentials","id":"CVE-2021-39185"},"products":["GlobalNewFiles"],"published":"2021-09-01","related":[{"cvss_score":6.5,"headline":"Uncontrolled Resource Consumption in GlobalNewFiles","id":"CVE-2021-32722","kev_date_added":null,"published":"2021-06-28"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2024-08-04","vendors":["miraheze"]},"summary":"Stored XSS in GlobalNewFiles allows attackers to execute scripts via usernames, affecting MediaWiki users.","url":"https://insights.sbomify.com/CVE-2021-39186/"}