{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-27927 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-27927 is a high-severity vulnerability in Zabbix Zabbix, published on 3 Mar 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-2021-27927 and fix it if it is affected.\n\nWhat it is: CVE-2021-27927 is a high-severity vulnerability in Zabbix Zabbix, published on 3 Mar 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-2021-27927 in the wild and no public exploit code.\n\nAffected product: Zabbix Zabbix. 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-2021-27927/ (Markdown: https://insights.sbomify.com/CVE-2021-27927/index.md)","id":"CVE-2021-27927","markdown":"https://insights.sbomify.com/CVE-2021-27927/index.md","name":"CVE-2021-27927","record":{"aliases":["DEBIAN-CVE-2021-27927","GHSA-3mh6-r7m6-r42x","UBUNTU-CVE-2021-27927"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Zabbix monitoring system","requires_auth":"none","summary":"An attacker can perform unauthorized actions on behalf of a logged-in Zabbix administrator by exploiting a missing CSRF protection in the authentication update controller.","user_interaction":"required","vuln_class":"csrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"zabbix","vendor":"zabbix"}],"cvss":{"score":8.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-352","name":"Cross-Site Request Forgery"}],"description":"In Zabbix from 4.0.x before 4.0.28rc1, 5.0.0alpha1 before 5.0.10rc1, 5.2.x before 5.2.6rc1, and 5.4.0alpha1 before 5.4.0beta2, the CControllerAuthenticationUpdate controller lacks a CSRF protection mechanism. The code inside this controller calls diableSIDValidation inside the init() method. An attacker doesn't have to know Zabbix user login credentials, but has to know the correct Zabbix URL and contact information of an existing user with sufficient privileges.","ecosystems":[],"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 request forgery in n/a","id":"CVE-2021-27927","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"zabbix:zabbix","products":["zabbix:zabbix"],"type":"csrf","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Code injection in n/a","id":"CVE-2021-27928"},"packages":[],"prev":{"headline":"Race condition in n/a","id":"CVE-2021-27925"},"products":["n/a"],"published":"2021-03-03","related":[{"cvss_score":9.1,"headline":"Zabbix Frontend Authentication Bypass","id":"CVE-2022-23131","kev_date_added":"2022-02-22","published":"2022-01-13"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2007-0640","kev_date_added":null,"published":"2007-01-31"},{"cvss_score":9.9,"headline":"SQL injection in user.get API","id":"CVE-2024-42327","kev_date_added":null,"published":"2024-11-27"},{"cvss_score":9.9,"headline":"Remote code execution within ping script","id":"CVE-2024-22116","kev_date_added":null,"published":"2024-08-09"},{"cvss_score":9.8,"headline":"Code injection in n/a","id":"CVE-2013-3738","kev_date_added":null,"published":"2020-02-17"},{"cvss_score":9.8,"headline":"SQL injection in n/a","id":"CVE-2013-5743","kev_date_added":null,"published":"2019-12-11"},{"cvss_score":9.8,"headline":"SQL injection in n/a","id":"CVE-2016-10134","kev_date_added":null,"published":"2017-02-16"}],"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":["n/a"]},"summary":"An attacker can perform unauthorized actions on behalf of a logged-in Zabbix administrator by exploiting a missing CSRF protection in the authentication update controller.","url":"https://insights.sbomify.com/CVE-2021-27927/"}