All vulnerabilities
CVE-2026-112043

calcom cal.com/cal.diy Webhook util.ts createWebhookProcedure authorization

calcom cal.com
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 19 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.30%Chance of exploitation activity in the next 30 days, higher than 21% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published19 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

A weakness has been identified in calcom cal.com and cal.diy up to 6.2.0. Impacted is the function createWebhookProcedure of the file packages/trpc/server/routers/viewer/webhook/util.ts of the component Webhook Handler. Executing a manipulation of the argument ID can lead to authorization bypass. It is possible to launch the attack remotely. The pull request to fix this issue awaits acceptance.

Text from CVE List

Affected versions 6

  • cal.comaffected: 6.0CVE List
  • cal.comaffected: 6.1CVE List
  • cal.comaffected: 6.2.0CVE List
  • cal.diyaffected: 6.0CVE List
  • cal.diyaffected: 6.1CVE List
  • cal.diyaffected: 6.2.0CVE List

References 6