{"answers":{"affected":"8 open source packages ship an affected version, including org.xwiki.platform:xwiki-platform-oldcore and org.xwiki.platform:xwiki-platform-web. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-29459 in the wild and no public exploit code.","fix":"Upgrade org.xwiki.platform:xwiki-platform-oldcore to a fixed version for your release line: 12.6.3 or 12.8.","what":"CVE-2021-29459 is a critical cross-site scripting vulnerability in Xwiki Xwiki, published on 20 Apr 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-2021-29459 and fix it if it is affected.\n\nWhat it is: CVE-2021-29459 is a critical cross-site scripting vulnerability in Xwiki Xwiki, published on 20 Apr 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-2021-29459 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.xwiki.platform:xwiki-platform-oldcore (Maven): affected all versions; fixed in 12.6.3\n- org.xwiki.platform:xwiki-platform-oldcore (Maven): affected all versions; fixed in 12.6.3\n- org.xwiki.platform:xwiki-platform-oldcore (Maven): affected from 12.6.4; fixed in 12.8\n- org.xwiki.platform:xwiki-platform-oldcore (Maven): affected from 12.6.4; fixed in 12.8\n- org.xwiki.platform:xwiki-platform-web (Maven): affected all versions; fixed in 12.6.3\n- org.xwiki.platform:xwiki-platform-web (Maven): affected all versions; fixed in 12.6.3\n- org.xwiki.platform:xwiki-platform-web (Maven): affected from 12.6.4; fixed in 12.8\n- org.xwiki.platform:xwiki-platform-web (Maven): affected from 12.6.4; fixed in 12.8\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-2021-29459/ (Markdown: https://insights.sbomify.com/CVE-2021-29459/index.md)","id":"CVE-2021-29459","markdown":"https://insights.sbomify.com/CVE-2021-29459/index.md","name":"CVE-2021-29459","record":{"aliases":["GHSA-5c66-v29h-xjh8"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"XWiki Platform","requires_auth":"none","summary":"Attackers can inject persistent scripts via text fields, potentially executing code or taking over accounts in XWiki.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"xwiki","vendor":"xwiki"}],"cvss":{"score":9.6,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. It is possible to persistently inject scripts in XWiki versions prior to 12.6.3 and 12.8. Unregistred users can fill simple text fields. Registered users can fill in their personal information and (if they have edit rights) fill the values of static lists using App Within Minutes. There is no easy workaround except upgrading XWiki. The vulnerability has been patched on XWiki 12.8 and 12.6.3.","ecosystems":["Maven"],"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":"XSS Cross Site Scripting","id":"CVE-2021-29459","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"xwiki:xwiki","products":["xwiki:xwiki"],"type":"xss","year":"2021"},"n_packages":8,"n_references":1,"next":{"headline":"Cross-site scripting (XSS) from unsanitized uploaded SVG files","id":"CVE-2021-29460"},"packages":[{"ecosystem":"Maven","fixed":["12.6.3"],"introduced":["0"],"last_affected":[],"package":"org.xwiki.platform:xwiki-platform-oldcore","purl":null,"source":"GHSA-5c66-v29h-xjh8"},{"ecosystem":"Maven","fixed":["12.6.3"],"introduced":["0"],"last_affected":[],"package":"org.xwiki.platform:xwiki-platform-oldcore","purl":"pkg:maven/org.xwiki.platform/xwiki-platform-oldcore","source":"GHSA-5c66-v29h-xjh8"},{"ecosystem":"Maven","fixed":["12.8"],"introduced":["12.6.4"],"last_affected":[],"package":"org.xwiki.platform:xwiki-platform-oldcore","purl":null,"source":"GHSA-5c66-v29h-xjh8"},{"ecosystem":"Maven","fixed":["12.8"],"introduced":["12.6.4"],"last_affected":[],"package":"org.xwiki.platform:xwiki-platform-oldcore","purl":"pkg:maven/org.xwiki.platform/xwiki-platform-oldcore","source":"GHSA-5c66-v29h-xjh8"},{"ecosystem":"Maven","fixed":["12.6.3"],"introduced":["0"],"last_affected":[],"package":"org.xwiki.platform:xwiki-platform-web","purl":null,"source":"GHSA-5c66-v29h-xjh8"},{"ecosystem":"Maven","fixed":["12.6.3"],"introduced":["0"],"last_affected":[],"package":"org.xwiki.platform:xwiki-platform-web","purl":"pkg:maven/org.xwiki.platform/xwiki-platform-web","source":"GHSA-5c66-v29h-xjh8"},{"ecosystem":"Maven","fixed":["12.8"],"introduced":["12.6.4"],"last_affected":[],"package":"org.xwiki.platform:xwiki-platform-web","purl":null,"source":"GHSA-5c66-v29h-xjh8"},{"ecosystem":"Maven","fixed":["12.8"],"introduced":["12.6.4"],"last_affected":[],"package":"org.xwiki.platform:xwiki-platform-web","purl":"pkg:maven/org.xwiki.platform/xwiki-platform-web","source":"GHSA-5c66-v29h-xjh8"}],"prev":{"headline":"Out-of-bounds read in Exiv2::Internal::CrwMap::encode","id":"CVE-2021-29458"},"products":["xwiki-platform"],"published":"2021-04-20","related":[{"cvss_score":9.8,"headline":"XWiki Platform Eval Injection","id":"CVE-2025-24893","kev_date_added":"2025-10-30","published":"2025-02-20"},{"cvss_score":10,"headline":"XWiki Rendering is vulnerable to RCE attacks when processing nested macros","id":"CVE-2025-53836","kev_date_added":null,"published":"2025-07-14"},{"cvss_score":10,"headline":"XWiki allows remote code execution through the extension sheet","id":"CVE-2024-55662","kev_date_added":null,"published":"2024-12-12"},{"cvss_score":10,"headline":"XWiki allows remote code execution from account through macro descriptions and XWiki.XWikiSyntaxMacrosList","id":"CVE-2024-55877","kev_date_added":null,"published":"2024-12-12"},{"cvss_score":10,"headline":"XWiki Platform vulnerable to remote code execution from account via SearchSuggestConfigSheet","id":"CVE-2024-37901","kev_date_added":null,"published":"2024-07-31"},{"cvss_score":10,"headline":"XWiki programming rights may be inherited by inclusion","id":"CVE-2024-38369","kev_date_added":null,"published":"2024-06-24"},{"cvss_score":10,"headline":"XWiki Platform: Remote code execution from account via SearchSuggestSourceSheet","id":"CVE-2024-31465","kev_date_added":null,"published":"2024-04-10"}],"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":"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":["xwiki"]},"summary":"Attackers can inject persistent scripts via text fields, potentially executing code or taking over accounts in XWiki.","url":"https://insights.sbomify.com/CVE-2021-29459/"}