{"id":"CVE-2026-63768","title":"cal.diy through 6.2.0 contains an open redirect vulnerability in the conferencing OAuth callback endpoint that allows attackers to redirect users to arbitrary URLs by crafting malicious state parameters","summary":"cal.diy through 6.2.0 contains an open redirect vulnerability in the conferencing OAuth callback endpoint that allows attackers to redirect users to arbitrary URLs by crafting malicious state parameters. Attackers can exploit the unsigne…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","cwe":["CWE-601"],"vendor":"calcom","product":"cal.diy","affected":["cal.diy <= 6.2.0"],"published":"2026-07-20","updated":"2026-09-17","sourceUpdated":"2026-09-17T18:16:58.460","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63768","references":[{"url":"https://github.com/calcom/cal.diy/issues/29679","label":"disclosure@vulncheck.com"},{"url":"https://github.com/calcom/cal.diy/pull/29681","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/cal-diy-conferencing-oauth-callback-open-redirect-via-unsigned-state","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-07-20T19:27:56.880013Z"},"epss":0.00342,"epssPercentile":0.27883,"ingestedAt":"2026-09-17T18:25:15.978Z","slug":"CVE-2026-63768","body":"## Overview\n\ncal.diy through 6.2.0 contains an open redirect vulnerability in the conferencing OAuth callback endpoint that allows attackers to redirect users to arbitrary URLs by crafting malicious state parameters. Attackers can exploit the unsigned state parameter and onErrorReturnTo field to silently redirect visitors from the trusted domain to attacker-controlled URLs for phishing attacks.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}