CVE-2026-29200

Severity: critical (CVSS 9.9 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-04 · updated 2026-10-26
Weakness: CWE-639

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.

Affected products

WebPros Comet Backup: from 20.11.0 before 26.1.2; from 26.2.0 before 26.2.2 — fixed in 26.1.2, 26.2.2

How to fix

Upgrade to a fixed version: WebPros Comet Backup 26.1.2, 26.2.2. Check the vendor advisory for mitigations.

References

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

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