Medium 6.3Published Oct 19, 2026

CVE-2026-112043calcom cal.com/cal.diy Webhook util.ts createWebhookProcedure authorization

Updated under an hour ago (2026-10-19 04:00 UTC)

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It affects calcom cal.com and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 6.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:C
Weakness (CWE): CWE-639, CWE-285
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

calcom cal.com calcom:cal.com	6.0; 6.1; 6.2.0	CNA record
calcom cal.diy calcom:cal.diy	6.0; 6.1; 6.2.0	CNA record

References

https://vuldb.com/vuln/421691vdb-entry, technical-description
https://vuldb.com/vuln/421691/ctisignature, permissions-required
https://vuldb.com/cve/CVE-2026-112043third-party-advisory
https://vuldb.com/submit/1009017third-party-advisory
https://github.com/calcom/cal.diy/issues/29982issue-tracking
https://github.com/calcom/cal.diy/pull/30223issue-tracking, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.