{"answers":{"affected":"2 open source packages ship an affected version, including centreon/centreon. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-27676 in the wild and no public exploit code.","fix":"Upgrade centreon/centreon to 20.10.7 or later.","what":"CVE-2021-27676 is a medium-severity cross-site scripting vulnerability in Centreon Centreon, published on 26 May 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-2021-27676 and fix it if it is affected.\n\nWhat it is: CVE-2021-27676 is a medium-severity cross-site scripting vulnerability in Centreon Centreon, published on 26 May 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-2021-27676 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- centreon/centreon (Packagist): affected all versions; fixed in 20.10.7\n- centreon/centreon (Packagist): affected all versions; fixed in 20.10.7\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-2021-27676/ (Markdown: https://insights.sbomify.com/CVE-2021-27676/index.md)","id":"CVE-2021-27676","markdown":"https://insights.sbomify.com/CVE-2021-27676/index.md","name":"CVE-2021-27676","record":{"aliases":["GHSA-r5mf-q76q-f2xq"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Centreon monitoring","requires_auth":"low_privilege","summary":"Stored XSS in Centreon allows attackers to inject scripts via notification settings, potentially leading to session hijacking or code execution.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"centreon","vendor":"centreon"}],"cvss":{"score":5.4,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:L/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":"Centreon version 20.10.2 is affected by a cross-site scripting (XSS) vulnerability. The dep_description (Dependency Description) and dep_name (Dependency Name) parameters are vulnerable to stored XSS. A user has to log in and go to the Configuration \u003e Notifications \u003e Hosts page.","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 in Centreon","id":"CVE-2021-27676","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"centreon:centreon","products":["centreon:centreon"],"type":"xss","year":"2021"},"n_packages":2,"n_references":1,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2021-27677"},"packages":[{"ecosystem":"Packagist","fixed":["20.10.7"],"introduced":["0"],"last_affected":[],"package":"centreon/centreon","purl":null,"source":"GHSA-r5mf-q76q-f2xq"},{"ecosystem":"Packagist","fixed":["20.10.7"],"introduced":["0"],"last_affected":[],"package":"centreon/centreon","purl":"pkg:composer/centreon/centreon","source":"GHSA-r5mf-q76q-f2xq"}],"prev":{"headline":"reflected XSS in tribalsystems/zenario","id":"CVE-2021-27673"},"products":["n/a"],"published":"2021-05-26","related":[{"cvss_score":9.8,"headline":"SQL injection in n/a","id":"CVE-2021-37558","kev_date_added":null,"published":"2021-08-03"},{"cvss_score":9.8,"headline":"SQL injection in n/a","id":"CVE-2019-17647","kev_date_added":null,"published":"2020-03-05"},{"cvss_score":9.8,"headline":"File upload in n/a","id":"CVE-2018-21024","kev_date_added":null,"published":"2019-10-08"},{"cvss_score":9.8,"headline":"SQL injection in Centreon","id":"CVE-2019-16194","kev_date_added":null,"published":"2019-09-25"},{"cvss_score":9.8,"headline":"Centreon allows SNMP trap SQL Injection","id":"CVE-2018-19281","kev_date_added":null,"published":"2018-11-14"},{"cvss_score":9.8,"headline":"Centreon RCE Vulnerability","id":"CVE-2018-11587","kev_date_added":null,"published":"2018-06-25"},{"cvss_score":9.8,"headline":"SQL injection in n/a","id":"CVE-2018-11589","kev_date_added":null,"published":"2018-06-25"}],"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":"2026-07-09","vendors":["n/a"]},"summary":"Stored XSS in Centreon allows attackers to inject scripts via notification settings, potentially leading to session hijacking or code execution.","url":"https://insights.sbomify.com/CVE-2021-27676/"}