{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-30120 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-30120 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-30120 is a critical authentication bypass vulnerability in n/a, published on 9 Jul 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-30120 and fix it if it is affected.\n\nWhat it is: CVE-2021-30120 is a critical authentication bypass vulnerability in n/a, published on 9 Jul 2021. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-30120 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2021-30120/ (Markdown: https://insights.sbomify.com/CVE-2021-30120/index.md)","id":"CVE-2021-30120","markdown":"https://insights.sbomify.com/CVE-2021-30120/index.md","name":"CVE-2021-30120","record":{"aliases":["GHSA-r6j9-rwx4-qcj3"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["account_takeover","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Kaseya VSA","requires_auth":"low_privilege","summary":"Attackers can bypass two-factor authentication by intercepting and modifying client-side responses, allowing unauthorized access to Kaseya VSA accounts.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"vsa","vendor":"kaseya"}],"cvss":{"score":9.9,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-669","name":"Incorrect Resource Transfer Between Spheres"}],"description":"Kaseya VSA before 9.5.7 allows attackers to bypass the 2FA requirement. The need to use 2FA for authentication in enforce client-side instead of server-side and can be bypassed using a local proxy. Thus rendering 2FA useless. Detailed description --- During the login process, after the user authenticates with username and password, the server sends a response to the client with the booleans MFARequired and MFAEnroled. If the attacker has obtained a password of a user and used an intercepting proxy (e.g. Burp Suite) to change the value of MFARequered from True to False, there is no prompt for the second factor, but the user is still logged in.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"exploited"},"has_fix":null,"headline":"2FA bypass in Kaseya VSA \u003c= v9.5.6","id":"CVE-2021-30120","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"(Semi-)Authenticated local file inclusion in Kaseya VSA \u003c v9.5.6","id":"CVE-2021-30121"},"packages":[],"prev":{"headline":"Authenticated Authenticated reflective XSS in Kaseya VSA \u003c= v9.5.6","id":"CVE-2021-30119"},"products":["n/a"],"published":"2021-07-09","related":[{"cvss_score":9.8,"headline":"Authenticated SQL injection in Kaseya VSA \u003c v9.5.6","id":"CVE-2021-30117","kev_date_added":null,"published":"2021-07-09"},{"cvss_score":9.8,"headline":"Unauthenticated Remote Code Execution in Kaseya VSA \u003c v9.5.5","id":"CVE-2021-30118","kev_date_added":null,"published":"2021-07-09"},{"cvss_score":7.5,"headline":"Unauthenticated XML External Entity vulnerability in Kaseya VSA \u003c v9.5.6","id":"CVE-2021-30201","kev_date_added":null,"published":"2021-07-09"},{"cvss_score":6.7,"headline":"Hardcoded credentials in n/a","id":"CVE-2019-14510","kev_date_added":null,"published":"2019-10-11"},{"cvss_score":6.5,"headline":"(Semi-)Authenticated local file inclusion in Kaseya VSA \u003c v9.5.6","id":"CVE-2021-30121","kev_date_added":null,"published":"2021-07-09"},{"cvss_score":5.4,"headline":"Authenticated Authenticated reflective XSS in Kaseya VSA \u003c= v9.5.6","id":"CVE-2021-30119","kev_date_added":null,"published":"2021-07-09"}],"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":"yes","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-14","vendors":["n/a"]},"summary":"Attackers can bypass two-factor authentication by intercepting and modifying client-side responses, allowing unauthorized access to Kaseya VSA accounts.","url":"https://insights.sbomify.com/CVE-2021-30120/"}