CVE-2026-63768 (GCVE-0-2026-63768)

Vulnerability from cvelistv5 – Published: 2026-07-20 19:08 – Updated: 2026-09-17 17:54 X_Open Source
VLAI
Title
cal.diy 6.2.0 Conferencing OAuth Callback Open Redirect via Unsigned State
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 unsigned state parameter and onErrorReturnTo field to silently redirect visitors from the trusted domain to attacker-controlled URLs for phishing attacks.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 19:27 UTC
CWE
  • CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6966 records in the last 180 days details
References
URL Tags
https://github.com/calcom/cal.diy/issues/29679 technical-descriptionexploitissue-tracking
https://github.com/calcom/cal.diy/pull/29681 issue-trackingpatch
https://www.vulncheck.com/advisories/cal-diy-conf… third-party-advisory
Impacted products
Vendor Product Version CPE status
calcom cal.diy Affected: 0 , ≤ 6.2.0 (semver)
guessed Create a notification for this product.
Date Public
2026-06-30 00:00
Credits
George Chen
Show details on NVD website
To clipboard 

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