Vulnerability · Published May 4, 2026 · Assigned by hackerone
CVE-2026-29200
Critical 9.9
In plain English
A critical-severity authorization bypass via user-controlled key in Comet Backup from WebPros. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).
Severity (CVSS 4.0)9.9Critical
Exploit odds (30 days)0.3%top 77.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WebPros | Comet Backup | 20.11.0 – before 26.1.226.2.0 – before 26.2.2 |
Weakness: CWE-639 · Vector: 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