{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-20721 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20721 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20721 is a critical vulnerability in kujirahand KonaWiki2, published on 20 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-20721 and fix it if it is affected.\n\nWhat it is: CVE-2021-20721 is a critical vulnerability in kujirahand KonaWiki2, published on 20 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-20721 in the wild and no public exploit code.\n\nAffected product: kujirahand KonaWiki2. 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-2021-20721/ (Markdown: https://insights.sbomify.com/CVE-2021-20721/index.md)","id":"CVE-2021-20721","markdown":"https://insights.sbomify.com/CVE-2021-20721/index.md","name":"CVE-2021-20721","record":{"aliases":["GHSA-8438-2753-v3v3"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"KonaWiki2 wiki software","requires_auth":"none","summary":"Remote attackers can upload arbitrary files, potentially executing PHP code, affecting KonaWiki2 users.","user_interaction":"not_required","vuln_class":"file_upload"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jpcert","cpe":[{"product":"konawiki","vendor":"kujirahand"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"}],"description":"KonaWiki2 versions prior to 2.2.4 allows a remote attacker to upload arbitrary files via unspecified vectors. If the file contains PHP scripts, arbitrary code may be executed.","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":"File upload in KonaWiki2","id":"CVE-2021-20721","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"file_upload","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Privilege escalation in The installers of ScanSnap Manager and the Software Download Installer","id":"CVE-2021-20722"},"packages":[],"prev":{"headline":"SQL injection in KonaWiki2","id":"CVE-2021-20720"},"products":["KonaWiki2"],"published":"2021-05-20","related":[{"cvss_score":9.8,"headline":"SQL injection in KonaWiki2","id":"CVE-2021-20720","kev_date_added":null,"published":"2021-05-20"},{"cvss_score":6.1,"headline":"Cross-site scripting in KonaWiki","id":"CVE-2020-5612","kev_date_added":null,"published":"2020-07-29"},{"cvss_score":6.1,"headline":"Cross-site scripting in KonaWiki","id":"CVE-2020-5613","kev_date_added":null,"published":"2020-07-29"},{"cvss_score":5.3,"headline":"Path traversal in KonaWiki","id":"CVE-2020-5614","kev_date_added":null,"published":"2020-07-29"}],"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":"2024-08-03","vendors":["kujirahand"]},"summary":"Remote attackers can upload arbitrary files, potentially executing PHP code, affecting KonaWiki2 users.","url":"https://insights.sbomify.com/CVE-2021-20721/"}