{"answers":{"affected":"1 open source package ship an affected version, including joomla. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-23124 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-23124 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-23124 is a medium-severity cross-site scripting vulnerability in Joomla Joomla\\!, published on 12 Jan 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-2021-23124 and fix it if it is affected.\n\nWhat it is: CVE-2021-23124 is a medium-severity cross-site scripting vulnerability in Joomla Joomla\\!, published on 12 Jan 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-2021-23124 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- joomla (Bitnami): affected from 3.9.0 up to 3.9.23; no fix listed\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-2021-23124/ (Markdown: https://insights.sbomify.com/CVE-2021-23124/index.md)","id":"CVE-2021-23124","markdown":"https://insights.sbomify.com/CVE-2021-23124/index.md","name":"CVE-2021-23124","record":{"aliases":["BIT-joomla-2021-23124","GHSA-mhvc-g5wh-hrxg"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Joomla CMS","requires_auth":"none","summary":"Cross-site scripting vulnerability in Joomla breadcrumbs module allows attackers to inject malicious scripts via unescaped aria-label attributes.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Joomla","cpe":[{"product":"joomla\\!","vendor":"joomla"}],"cvss":{"score":6.1,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"An issue was discovered in Joomla! 3.9.0 through 3.9.23. The lack of escaping in mod_breadcrumbs aria-label attribute allows XSS attacks.","ecosystems":["Bitnami"],"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":"[20210102] - Core - XSS in mod_breadcrumbs aria-label attribute","id":"CVE-2021-23124","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"joomla:joomla\\!","products":["joomla:joomla\\!"],"type":"xss","year":"2021"},"n_packages":1,"n_references":1,"next":{"headline":"[20210103] - Core - XSS in com_tags image parameters","id":"CVE-2021-23125"},"packages":[{"ecosystem":"Bitnami","fixed":[],"introduced":["3.9.0"],"last_affected":["3.9.23"],"package":"joomla","purl":"pkg:bitnami/joomla","source":"BIT-joomla-2021-23124"}],"prev":{"headline":"[20210101] - Core - com_modules exposes module names","id":"CVE-2021-23123"},"products":["Joomla! CMS"],"published":"2021-01-12","related":[{"cvss_score":9.8,"headline":"PHPMailer Command Injection","id":"CVE-2016-10033","kev_date_added":"2025-07-07","published":"2016-12-30"},{"cvss_score":5.3,"headline":"Joomla! Improper Access Control","id":"CVE-2023-23752","kev_date_added":"2024-01-08","published":"2023-02-16"},{"cvss_score":9.8,"headline":"Joomla! Core - [20260518] - Transport encryption downgrade for password and username reset links","id":"CVE-2026-48902","kev_date_added":null,"published":"2026-05-26"},{"cvss_score":9.8,"headline":"[20250401] - Joomla Framework - SQL injection vulnerability in quoteNameStr method of Database package","id":"CVE-2025-25226","kev_date_added":null,"published":"2025-04-08"},{"cvss_score":9.8,"headline":"[20220303] - Core - User row are not bound to a authentication mechanism","id":"CVE-2022-23795","kev_date_added":null,"published":"2022-03-30"},{"cvss_score":9.8,"headline":"[20220305] - Core - Inadequate filtering on the selected Ids","id":"CVE-2022-23797","kev_date_added":null,"published":"2022-03-30"},{"cvss_score":9.8,"headline":"[20220307] - Core - Variable Tampering on JInput $_REQUEST data","id":"CVE-2022-23799","kev_date_added":null,"published":"2022-03-30"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"2026-02-25","vendors":["Joomla! Project"]},"summary":"Cross-site scripting vulnerability in Joomla breadcrumbs module allows attackers to inject malicious scripts via unescaped aria-label attributes.","url":"https://insights.sbomify.com/CVE-2021-23124/"}