{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-105215 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-105215 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-105215 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-2026-105215 and fix it if it is affected.\n\nWhat it is: CVE-2026-105215 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-2026-105215 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-2026-105215/ (Markdown: https://insights.sbomify.com/CVE-2026-105215/index.md)","id":"CVE-2026-105215","markdown":"https://insights.sbomify.com/CVE-2026-105215/index.md","name":"CVE-2026-105215","record":{"aliases":["GHSA-639g-x9rp-hw3x","GHSA-738m-7888-jfv8"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Identity and Access Management","requires_auth":"none","summary":"Unauthenticated attackers can pre-create accounts bound to victim identities via forged IdP callbacks, leading to account takeover when victims log in.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-290","name":"Authentication Bypass by Spoofing"}],"description":"ZITADEL before 3.4.14 and 4.x before 4.16.2 contains an authentication bypass in the hosted Login V1 UI because the 'external account not found' registration endpoint trusts client-supplied external identity fields without a completed IdP callback. Unauthenticated attackers can submit forged IDPConfigID and ExternalUserID values to pre-create an account bound to a victim's external IdP identity, which the victim's later genuine external login then signs into.","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 4.16.2 Account Pre-Hijacking via Forged External IdP Callback","id":"CVE-2026-105215","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":"go-micro before 6.0.0 Disabled TLS Certificate Verification via tls.Config Helper","id":"CVE-2026-105216"},"packages":[],"prev":{"headline":"Zitadel before 4.16.2 SSRF via Organization Domain HTTP Verification","id":"CVE-2026-105214"},"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":"total"},"state":"PUBLISHED","updated":"2026-10-29","vendors":["zitadel"]},"summary":"Unauthenticated attackers can pre-create accounts bound to victim identities via forged IdP callbacks, leading to account takeover when victims log in.","url":"https://insights.sbomify.com/CVE-2026-105215/"}