Is CVE-2026-63768 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-63768 being exploited in the wild.

How severe is CVE-2026-63768?

Medium severity, with a CVSS score of 4.3, published 20 July 2026.

Is there a fix for CVE-2026-63768?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-63768 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-63768?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-63768: calcom cal.diy open redirect in conferencing OAuth callback

CVE-2026-63768 · Severity: medium · CVSS 4.3 · Published 2026-07-20

cal.diy is an open-source scheduling platform. A security flaw in its conferencing integration allows attackers to create malicious links that appear to come from a trusted domain but instead redirect users to a fraudulent website. This could be used in phishing campaigns to steal user credentials or distribute malware by exploiting the user's trust in the scheduling service.

Quick answers

Is CVE-2026-63768 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-63768 being exploited in the wild.
How severe is CVE-2026-63768?: Medium severity, with a CVSS score of 4.3, published 20 July 2026.
Which products and versions are affected?: calcom cal.diy <= 6.2.0.
Is there a fix for CVE-2026-63768?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-63768 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-63768?: Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An open redirect vulnerability (CWE-601) exists in the conferencing OAuth callback endpoint of cal.diy. The vulnerable component, located in the conferencing controller, fails to validate the 'state' query parameter and its 'onErrorReturnTo' field. An attacker can craft a URL containing a malicious JSON-encoded state parameter; when the endpoint encounters an error (which can be trivially triggered by providing an 'error' parameter), it issues a 301 redirect to the attacker-supplied URL. This occurs because the endpoint is unauthenticated and lacks signature or integrity checks on the state object. A patch has been proposed to implement origin validation using a new utility function.

Affected products

calcom cal.diy <= 6.2.0

Timeline

2026-05-18: disclosed: Private disclosure to vendor
2026-06-30: other: Public issue and pull request created on GitHub
2026-07-20: advisory: CVE published and NVD record created

References

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