{"answers":{"affected":"2 open source packages ship an affected version, including better-auth.","exploited":"There is no known exploitation of CVE-2026-110864 in the wild and no public exploit code.","fix":"Upgrade better-auth to 1.7.7 or later.","what":"CVE-2026-110864 is a critical authentication bypass vulnerability in better-auth, published on 14 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-2026-110864 and fix it if it is affected.\n\nWhat it is: CVE-2026-110864 is a critical authentication bypass vulnerability in better-auth, published on 14 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-2026-110864 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- better-auth (npm): affected from 1.5.0-beta.12; fixed in 1.7.7\n- better-auth (npm): affected from 1.5.0-beta.12; fixed in 1.7.7\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-2026-110864/ (Markdown: https://insights.sbomify.com/CVE-2026-110864/index.md)","id":"CVE-2026-110864","markdown":"https://insights.sbomify.com/CVE-2026-110864/index.md","name":"CVE-2026-110864","record":{"aliases":["GHSA-r4xp-prcw-77qf","GHSA-w232-44q8-h37x"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":true,"product_category":"Better Auth library","requires_auth":"none","summary":"Attackers can bypass authentication and take over accounts by forging encrypted profiles when the OAuth Proxy plugin shares a global secret.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.1,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"Better Auth from 1.5.0-beta.12 before 1.7.7 contains an authentication bypass vulnerability in the OAuth Proxy plugin that allows unauthenticated attackers to sign in as other users by forging encrypted profiles. When the proxy shares the global secret and cookie-stored state is used, attackers can obtain encrypted state for a fake profile with a victim's verified email to take over the account via implicit linking.","ecosystems":["npm"],"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":"Better Auth 1.5.0-beta.12 before 1.7.7 Authentication Bypass via OAuth Proxy","id":"CVE-2026-110864","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"Renovate before 44.60.1 HTTP Header Allowlist Bypass via Shared Presets","id":"CVE-2026-110865"},"packages":[{"ecosystem":"npm","fixed":["1.7.7"],"introduced":["1.5.0-beta.12"],"last_affected":[],"package":"better-auth","purl":null,"source":"GHSA-r4xp-prcw-77qf"},{"ecosystem":"npm","fixed":["1.7.7"],"introduced":["1.5.0-beta.12"],"last_affected":[],"package":"better-auth","purl":"pkg:npm/better-auth","source":"GHSA-r4xp-prcw-77qf"}],"prev":{"headline":"Better Auth @better-auth/sso before 1.7.3 Authentication Bypass via Personal SSO Providers","id":"CVE-2026-110863"},"products":["better-auth"],"published":"2026-10-14","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"2026-10-15","vendors":["better-auth"]},"summary":"Attackers can bypass authentication and take over accounts by forging encrypted profiles when the OAuth Proxy plugin shares a global secret.","url":"https://insights.sbomify.com/CVE-2026-110864/"}