CVE-2026-29200

Critical

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.

SeverityCritical

CVSS9.9

Exploit probability—

ProductComet Backup

PublishedMay 4, 2026

First seenMay 4, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update

WebPros Comet Backup26.1.2, 26.2.2 or later

Affected products

Product	Affected versions	Fixed in
WebPros Comet Backup	20.11.0 ≤ v < 26.1.2, 26.2.0 ≤ v < 26.2.2	26.1.2, 26.2.2

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