{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-66489 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-66489 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-66489 is a critical authentication bypass vulnerability in calcom cal.com, published on 3 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-66489 and fix it if it is affected.\n\nWhat it is: CVE-2025-66489 is a critical authentication bypass vulnerability in calcom cal.com, published on 3 Dec 2025. 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-2025-66489 in the wild and no public exploit code.\n\nAffected product: calcom cal.com. 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-2025-66489/ (Markdown: https://insights.sbomify.com/CVE-2025-66489/index.md)","id":"CVE-2025-66489","markdown":"https://insights.sbomify.com/CVE-2025-66489/index.md","name":"CVE-2025-66489","record":{"aliases":["GHSA-9r3w-4j8q-pw98"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Cal.com scheduling software","requires_auth":"none","summary":"Attackers can bypass password verification by providing a TOTP code, gaining unauthorized access to user accounts in Cal.com.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"cal.com","vendor":"cal"}],"cvss":{"score":9.9,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:N","version":"4.0"},"cwes":[{"id":"CWE-303","name":"Incorrect Implementation of Authentication Algorithm"}],"description":"Cal.com is open-source scheduling software. Prior to 5.9.8, A flaw in the login credentials provider allows an attacker to bypass password verification when a TOTP code is provided, potentially gaining unauthorized access to user accounts. This issue exists due to problematic conditional logic in the authentication flow. This vulnerability is fixed in 5.9.8.","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":"Cal.com Authentication Bypass via bad TOTP + password checks","id":"CVE-2025-66489","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2025"},"n_packages":0,"n_references":1,"next":{"headline":"Traefik doesn't Prevent Path Normalization Bypass in Router + Middleware Rules","id":"CVE-2025-66490"},"packages":[],"prev":{"headline":"Discourse allows script execution in uploaded HTML/XML files on S3","id":"CVE-2025-66488"},"products":["cal.com"],"published":"2025-12-03","related":[{"cvss_score":10,"headline":"Cal.com has an Authentication Bypass via Unvalidated Email in Custom JWT Callback","id":"CVE-2026-23478","kev_date_added":null,"published":"2026-01-13"},{"cvss_score":8.8,"headline":"Improper Access Control in calcom/cal.com","id":"CVE-2023-1647","kev_date_added":null,"published":"2023-03-27"},{"cvss_score":6.5,"headline":"Cal.com not expiring old sessions after enabling 2FA","id":"CVE-2023-37919","kev_date_added":null,"published":"2023-07-25"}],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-12-03","vendors":["calcom"]},"summary":"Attackers can bypass password verification by providing a TOTP code, gaining unauthorized access to user accounts in Cal.com.","url":"https://insights.sbomify.com/CVE-2025-66489/"}