CVE-2026-29200

State: Published
Severity: 9.9 Critical
Published: May 4, 2026
Updated: May 4, 2026
Reserved: Mar 4, 2026

Description

A critical IDOR vulnerability has been discovered in Comet Backup affecting all versions from 20.11.0 to 26.1.1 and 26.2.1. The vulnerability allows a tenant administrator to impersonate any end-user account of other tenants on the same server via a vulnerable API call.

Scores

CVSS	Score	Vector	Source
4.0	9.9 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:H	hackerone

Weaknesses

CWE-639 Insecure Direct Object Reference (IDOR)

Affected Products

Product	Versions
Comet BackupWebPros	20.11.0 to before 26.1.2Affected 26.2.0 to before 26.2.2Affected

References

https://support.cometbackup.com/hc/en-us/articles/40090945484823--CVE-2026-29200-%D0%A1ritical-IDOR-vulnerability-in-Comet-Backup

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