{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-105211 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-105211 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-105211 is a critical authentication bypass vulnerability in zitadel, published on 4 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-105211 and fix it if it is affected.\n\nWhat it is: CVE-2026-105211 is a critical authentication bypass vulnerability in zitadel, published on 4 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-105211 in the wild and no public exploit code.\n\nAffected product: zitadel. 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-2026-105211/ (Markdown: https://insights.sbomify.com/CVE-2026-105211/index.md)","id":"CVE-2026-105211","markdown":"https://insights.sbomify.com/CVE-2026-105211/index.md","name":"CVE-2026-105211","record":{"aliases":["GHSA-3gwm-5wx8-4gm6","GHSA-mq63-7hcv-jfrc"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["account_takeover","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Identity and Access Management","requires_auth":"none","summary":"Unauthenticated attackers can bypass MFA and take over accounts, including administrators, by reading OTP codes from server responses.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.2,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"ZITADEL before 4.17.1 contains an authentication bypass vulnerability in Login V2 that allows unauthenticated attackers to take over accounts by obtaining OTP codes via the returnCode delivery type. Attackers knowing a login name of a victim with OTP-Email and OTP-SMS enrolled can read both codes from server-action responses to gain MFA-authenticated sessions, including administrator takeover.","ecosystems":[],"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":"ZITADEL before 4.17.1 Authentication Bypass via Login V2 OTP returnCode","id":"CVE-2026-105211","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"ZITADEL before 3.4.14 and 4.16.2 Account Takeover via Passkey Enrollment","id":"CVE-2026-105212"},"packages":[],"prev":{"headline":"ZITADEL before 4.17.1 Unauthenticated MFA Enrollment via Login V1 Init Handlers","id":"CVE-2026-105210"},"products":["zitadel"],"published":"2026-10-04","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-05","vendors":["zitadel"]},"summary":"Unauthenticated attackers can bypass MFA and take over accounts, including administrators, by reading OTP codes from server responses.","url":"https://insights.sbomify.com/CVE-2026-105211/"}