{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-105210 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-105210 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-105210 is a high-severity 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-2026-105210 and fix it if it is affected.\n\nWhat it is: CVE-2026-105210 is a high-severity 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-2026-105210 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-2026-105210/ (Markdown: https://insights.sbomify.com/CVE-2026-105210/index.md)","id":"CVE-2026-105210","markdown":"https://insights.sbomify.com/CVE-2026-105210/index.md","name":"CVE-2026-105210","record":{"aliases":["GHSA-72q5-mv5c-vxv4","GHSA-j55w-p4wc-frwh"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["account_takeover","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Identity and Access Management","requires_auth":"none","summary":"Attackers can bypass authentication to enroll malicious MFA factors and enumerate users in ZITADEL by exploiting unverified session handlers.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"ZITADEL 3.x before 3.4.15 and 4.x before 4.17.1 contains a missing authentication flaw in the hosted Login V1 UI, whose second-factor enrollment and initialization handlers act on an identify-only session before any primary factor is verified. Attackers knowing only a victim's login name can enroll attacker-controlled TOTP, OTP-SMS, OTP-Email, or U2F factors, overwrite the verified phone number, and enumerate users through discrepant errors.","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 Unauthenticated MFA Enrollment via Login V1 Init Handlers","id":"CVE-2026-105210","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 4.17.1 Authentication Bypass via Login V2 OTP returnCode","id":"CVE-2026-105211"},"packages":[],"prev":{"headline":"ZITADEL before 3.4.15 and 4.17.1 Cross-Organization Account Takeover via Passkey Enrollment","id":"CVE-2026-105209"},"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-29","vendors":["zitadel"]},"summary":"Attackers can bypass authentication to enroll malicious MFA factors and enumerate users in ZITADEL by exploiting unverified session handlers.","url":"https://insights.sbomify.com/CVE-2026-105210/"}