TI-2026-71619 Aliases CVE-2026-109143 GHSA-72px-hx9f-mc45

Improper privilege management in Cal.com credential deletion

MEDIUM 57CWE-266Published 2026-10-13 · Updated 2026-10-16

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Privilege escalation
Confidentiality · integrity · availability: None · Low · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-266.

Summary

The calcom cal.com and cal.diy products up to 6.2.0 contain an improper privilege management flaw (CWE-269) in the credentials.delete function. Manipulating the teamId argument lets a remote attacker with low privileges act beyond their rights. A public exploit has been disclosed and is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Description from the CNA

A vulnerability was determined in calcom cal.com and cal.diy up to 6.2.0. This vulnerability affects the function credentials.delete of the file /api/trpc/credentials/delete of the component Credentials Handler. This manipulation of the argument teamId causes improper privilege management. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00225 13th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
calcom	cal.com	6.0; 6.1; 6.2.0	—	No fix listed	CNA
calcom	cal.diy	6.0; 6.1; 6.2.0	—	No fix listed	CNA

cal.com Vendorcalcom Affected 6.0; 6.1; 6.2.0 Fixed in — No fix listed CNA
cal.diy Vendorcalcom Affected 6.0; 6.1; 6.2.0 Fixed in — No fix listed CNA

CPE names CNA · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:calcom:cal.com::::::::	—	—	—
cpe:2.3:a:calcom:cal.diy::::::::	—	—	—

cpe:2.3:a:calcom:cal.com:*:*:*:*:*:*:*:* Versions — — ·—
cpe:2.3:a:calcom:cal.diy:*:*:*:*:*:*:*:* Versions — — ·—

Remediation

The sources list no fixed version for cal.com. The sources list no fixed version for cal.diy.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Timeline

2026-10-13 Threatist record created from CVE-2026-109143
2026-10-13 Alias added: GHSA-72px-hx9f-mc45
2026-10-16 CISA SSVC decision points changed
2026-10-16 Priority changed: LOW → MEDIUM

References

Exploit 1

https://gist.github.com/k4z01/7f7739e59ae595f7bdd45922adf2b547

TI-2024-38439 Cal.com through 4.7.15 Cross-Site Scripting via booking questions CVSS 4.0CRITICAL 9.3
TI-2024-38437 Cal.com through 4.7.15 Cross-Site Scripting via booking questions CVSS 4.0CRITICAL 9.3
TI-2024-38438 cal.com Repository Takeover via pull_request_target Workflow CVSS 4.0HIGH 8.5
TI-2026-08199 calcom cal.diy Generic React API bookings-single-view.getServerSideProps.tsx getServerSideProps information disclosure CVSS 4.0MEDIUM 6.9
TI-2023-19352 Cal.com not expiring old sessions after enabling 2FA CVSS 3.1MEDIUM 6.5
TI-2026-76231 Authorization bypass in cal.com and cal.diy webhook handler CVSS 4.0MEDIUM 5.3

See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences