{"answers":{"affected":"2 open source packages ship an affected version, including elgg/elgg. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-4072 in the wild and no public exploit code.","fix":"Upgrade elgg/elgg to 3.3.24 or later.","what":"CVE-2021-4072 is a critical cross-site scripting vulnerability in elgg/elgg, published on 24 Dec 2021. 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-2021-4072 and fix it if it is affected.\n\nWhat it is: CVE-2021-4072 is a critical cross-site scripting vulnerability in elgg/elgg, published on 24 Dec 2021. 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-2021-4072 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- elgg/elgg (Packagist): affected all versions; fixed in 3.3.24\n- elgg/elgg (Packagist): affected all versions; fixed in 3.3.24\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-2021-4072/ (Markdown: https://insights.sbomify.com/CVE-2021-4072/index.md)","id":"CVE-2021-4072","markdown":"https://insights.sbomify.com/CVE-2021-4072/index.md","name":"CVE-2021-4072","record":{"aliases":["GHSA-2xw8-j43j-5vxp"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Elgg social networking","requires_auth":"low_privilege","summary":"Attackers can inject malicious scripts into Elgg pages, potentially stealing user sessions or executing code in victim browsers.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"@huntrdev","cpe":[{"product":"elgg","vendor":"elgg"}],"cvss":{"score":9,"severity":"critical","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"elgg is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","ecosystems":["Packagist"],"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":"Cross-site Scripting (XSS) - Stored in elgg/elgg","id":"CVE-2021-4072","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"xss","year":"2021"},"n_packages":2,"n_references":2,"next":{"headline":"RegistrationMagic \u003c= 5.0.1.7 Authentication Bypass","id":"CVE-2021-4073"},"packages":[{"ecosystem":"Packagist","fixed":["3.3.24"],"introduced":["0"],"last_affected":[],"package":"elgg/elgg","purl":null,"source":"GHSA-2xw8-j43j-5vxp"},{"ecosystem":"Packagist","fixed":["3.3.24"],"introduced":["0"],"last_affected":[],"package":"elgg/elgg","purl":"pkg:composer/elgg/elgg","source":"GHSA-2xw8-j43j-5vxp"}],"prev":{"headline":"Off-by-one Error in v2fly/v2ray-core","id":"CVE-2021-4070"},"products":["elgg/elgg"],"published":"2021-12-24","related":[{"cvss_score":9.8,"headline":"SQL injection in Elgg","id":"CVE-2011-2936","kev_date_added":null,"published":"2019-11-12"},{"cvss_score":6.8,"headline":"Missing authorization in n/a","id":"CVE-2012-6562","kev_date_added":null,"published":"2013-05-23"},{"cvss_score":6.1,"headline":"Elgg Reflected XSS Vulnerability","id":"CVE-2011-2935","kev_date_added":null,"published":"2019-11-12"},{"cvss_score":6.1,"headline":"Elgg open redirect","id":"CVE-2019-11016","kev_date_added":null,"published":"2019-04-08"},{"cvss_score":5.3,"headline":"Exposure of Private Personal Information to an Unauthorized Actor in elgg/elgg","id":"CVE-2021-3980","kev_date_added":null,"published":"2021-12-03"},{"cvss_score":5,"headline":"Information disclosure in n/a","id":"CVE-2011-3733","kev_date_added":null,"published":"2011-09-23"}],"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":["elgg"]},"summary":"Attackers can inject malicious scripts into Elgg pages, potentially stealing user sessions or executing code in victim browsers.","url":"https://insights.sbomify.com/CVE-2021-4072/"}