Answer in brief
CVE-2026-63768 records a Medium severity (CVSS 5.3) vulnerability in cal.diy 6.2.0 Conferencing OAuth Callback Open Redirect via Unsigned State. The current sources do not mark it as known exploited. The current feed maps calcom/cal.diy (generic), calcom/cal.diy (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps calcom/cal.diy (generic), calcom/cal.diy (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| calcom/cal.diygeneric | 0 | Not reported |
| calcom/cal.diygeneric | >=0 <=6.2.0 | Not reported |
Published upstream
Jul 20, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.