{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-4271 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-4271 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-4271 is a low-severity cross-site scripting vulnerability in panicsteve w2wiki, published on 21 Dec 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-4271 and fix it if it is affected.\n\nWhat it is: CVE-2021-4271 is a low-severity cross-site scripting vulnerability in panicsteve w2wiki, published on 21 Dec 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-4271 in the wild and no public exploit code.\n\nAffected product: panicsteve w2wiki. 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-2021-4271/ (Markdown: https://insights.sbomify.com/CVE-2021-4271/index.md)","id":"CVE-2021-4271","markdown":"https://insights.sbomify.com/CVE-2021-4271/index.md","name":"CVE-2021-4271","record":{"aliases":["GHSA-q3hj-8gmm-3pv5"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"w2wiki","requires_auth":"low_privilege","summary":"Remote attackers can execute arbitrary scripts in w2wiki via the Markdown handler, requiring a patch to mitigate.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[{"product":"w2wiki","vendor":"w2wiki_project"}],"cvss":{"score":3.5,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"},{"id":"CWE-707","name":"Improper Neutralization"}],"description":"A vulnerability was found in panicsteve w2wiki. It has been rated as problematic. Affected by this issue is the function toHTML of the file index.php of the component Markdown Handler. The manipulation leads to cross site scripting. The attack may be launched remotely. The name of the patch is 8f1d0470b4ddb1c7699e3308e765c11ed29542b6. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-216476.","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":"panicsteve w2wiki Markdown index.php toHTML cross site scripting","id":"CVE-2021-4271","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"studygolang topics.js cross site scripting","id":"CVE-2021-4272"},"packages":[],"prev":{"headline":"Imprint CMS ViewHelpers.cs SearchForm cross site scripting","id":"CVE-2021-4270"},"products":["w2wiki"],"published":"2022-12-21","related":[],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-04-14","vendors":["panicsteve"]},"summary":"Remote attackers can execute arbitrary scripts in w2wiki via the Markdown handler, requiring a patch to mitigate.","url":"https://insights.sbomify.com/CVE-2021-4271/"}